389134431 has 18 divisors (see below), whose sum is σ = 653852472. Its totient is φ = 222362280.

The previous prime is 389134411. The next prime is 389134451. The reversal of 389134431 is 134431983.

It is an interprime number because it is at equal distance from previous prime (389134411) and next prime (389134451).

It is not a de Polignac number, because 389134431 - 2⁶ = 389134367 is a prime.

It is a super-2 number, since 2×389134431² = 302851210779387522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389134411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 440755 + ... + 441636.

Almost surely, 2^389134431 is an apocalyptic number.

389134431 is a deficient number, since it is larger than the sum of its proper divisors (264718041).

389134431 is a wasteful number, since it uses less digits than its factorization.

389134431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882411 (or 882401 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 389134431 is about 19726.4905900670. The cubic root of 389134431 is about 730.0734466666.

The spelling of 389134431 in words is "three hundred eighty-nine million, one hundred thirty-four thousand, four hundred thirty-one".