389095631 has 4 divisors (see below), whose sum is σ = 396437112. Its totient is φ = 381754152.

The previous prime is 389095607. The next prime is 389095633. The reversal of 389095631 is 136590983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389095631 - 2²⁶ = 321986767 is a prime.

It is a super-2 number, since 2×389095631² = 302790820126576322, 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 (389095633) 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, 3670661 + ... + 3670766.

It is an arithmetic number, because the mean of its divisors is an integer number (99109278).

Almost surely, 2^389095631 is an apocalyptic number.

389095631 is a deficient number, since it is larger than the sum of its proper divisors (7341481).

389095631 is an equidigital number, since it uses as much as digits as its factorization.

389095631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7341480.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 389095631 is about 19725.5071164216. The cubic root of 389095631 is about 730.0491810238.

The spelling of 389095631 in words is "three hundred eighty-nine million, ninety-five thousand, six hundred thirty-one".