431428959 has 12 divisors (see below), whose sum is σ = 671111896. Its totient is φ = 265494672.

The previous prime is 431428931. The next prime is 431428961. The reversal of 431428959 is 959824134.

431428959 is a `hidden beast` number, since 4 + 314 + 289 + 59 = 666.

It is not a de Polignac number, because 431428959 - 2⁵ = 431428927 is a prime.

It is a super-2 number, since 2×431428959² = 372261893327647362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431428979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1843597 + ... + 1843830.

Almost surely, 2^431428959 is an apocalyptic number.

431428959 is a deficient number, since it is larger than the sum of its proper divisors (239682937).

431428959 is a wasteful number, since it uses less digits than its factorization.

431428959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3687446 (or 3687443 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 431428959 is about 20770.8680367480. The cubic root of 431428959 is about 755.6193966873.

The spelling of 431428959 in words is "four hundred thirty-one million, four hundred twenty-eight thousand, nine hundred fifty-nine".