437 = 19 x 23. It is the product of two successive primes.
437 is a brilliant number. It is a semiprime (product of two primes) whose prime factors have the same number of decimal digits.
437 has a cube with the last three digits the same as the three digits before that: 83453453.
437 is 3222 in base 5 and 233 in base 14.
The digit 1 can be found at the 437th position in the decimal expansion of pi.
Cosmonaut Valeri Polyakov spent 437 days aboard the space station Mir in 1994-5, the longest time spent by a human in outer space.