389662431 has 16 divisors (see below), whose sum is σ = 559616640. Its totient is φ = 240377760.

The previous prime is 389662369. The next prime is 389662447. The reversal of 389662431 is 134266983.

It is not a de Polignac number, because 389662431 - 2⁶ = 389662367 is a prime.

It is a super-2 number, since 2×389662431² = 303673620265659522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389662451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77040 + ... + 81941.

It is an arithmetic number, because the mean of its divisors is an integer number (34976040).

Almost surely, 2^389662431 is an apocalyptic number.

389662431 is a deficient number, since it is larger than the sum of its proper divisors (169954209).

389662431 is a wasteful number, since it uses less digits than its factorization.

389662431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159046.

The product of its digits is 186624, while the sum is 42.

The square root of 389662431 is about 19739.8690725141. The cubic root of 389662431 is about 730.4034993286.

It can be divided in two parts, 389662 and 431, that added together give a palindrome (390093).

The spelling of 389662431 in words is "three hundred eighty-nine million, six hundred sixty-two thousand, four hundred thirty-one".