389446632 has 24 divisors (see below), whose sum is σ = 1054751490. Its totient is φ = 129815520.

The previous prime is 389446619. The next prime is 389446637. The reversal of 389446632 is 236644983.

389446632 is a `hidden beast` number, since 3 + 8 + 9 + 4 + 4 + 6 + 632 = 666.

It can be written as a sum of positive squares in only one way, i.e., 389430756 + 15876 = 19734^2 + 126^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×389446632² = 303337358352286848, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (389446637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2704419 + ... + 2704562.

Almost surely, 2^389446632 is an apocalyptic number.

It is an amenable number.

389446632 is an abundant number, since it is smaller than the sum of its proper divisors (665304858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389446632 is a wasteful number, since it uses less digits than its factorization.

389446632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5408993 (or 5408986 counting only the distinct ones).

The product of its digits is 746496, while the sum is 45.

The square root of 389446632 is about 19734.4022458244. The cubic root of 389446632 is about 730.2686394786.

The spelling of 389446632 in words is "three hundred eighty-nine million, four hundred forty-six thousand, six hundred thirty-two".