437490421 has 4 divisors (see below), whose sum is σ = 437687712. Its totient is φ = 437293132.

The previous prime is 437490413. The next prime is 437490439. The reversal of 437490421 is 124094734.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 437490421 - 2³ = 437490413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (437490451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95281 + ... + 99766.

It is an arithmetic number, because the mean of its divisors is an integer number (109421928).

Almost surely, 2^437490421 is an apocalyptic number.

It is an amenable number.

437490421 is a deficient number, since it is larger than the sum of its proper divisors (197291).

437490421 is a wasteful number, since it uses less digits than its factorization.

437490421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197290.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 437490421 is about 20916.2716802015. The cubic root of 437490421 is about 759.1417024550.

The spelling of 437490421 in words is "four hundred thirty-seven million, four hundred ninety thousand, four hundred twenty-one".