389027431 has 16 divisors (see below), whose sum is σ = 437421600. Its totient is φ = 343502208.

The previous prime is 389027417. The next prime is 389027459. The reversal of 389027431 is 134720983.

It is a cyclic number.

It is not a de Polignac number, because 389027431 - 2⁵ = 389027399 is a prime.

It is a super-2 number, since 2×389027431² = 302684684140919522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389027461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36360 + ... + 45826.

It is an arithmetic number, because the mean of its divisors is an integer number (27338850).

Almost surely, 2^389027431 is an apocalyptic number.

389027431 is a deficient number, since it is larger than the sum of its proper divisors (48394169).

389027431 is a wasteful number, since it uses less digits than its factorization.

389027431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9618.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 389027431 is about 19723.7783145116. The cubic root of 389027431 is about 730.0065246180.

The spelling of 389027431 in words is "three hundred eighty-nine million, twenty-seven thousand, four hundred thirty-one".