439902664 has 16 divisors (see below), whose sum is σ = 825054300. Its totient is φ = 219888192.

The previous prime is 439902629. The next prime is 439902667. The reversal of 439902664 is 466209934.

It can be written as a sum of positive squares in 2 ways, for example, as 430230564 + 9672100 = 20742^2 + 3110^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 439902664.

It is not an unprimeable number, because it can be changed into a prime (439902667) 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, 36214 + ... + 46810.

Almost surely, 2^439902664 is an apocalyptic number.

It is an amenable number.

439902664 is a deficient number, since it is larger than the sum of its proper divisors (385151636).

439902664 is a wasteful number, since it uses less digits than its factorization.

439902664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15792 (or 15788 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 43.

The square root of 439902664 is about 20973.8566792090. The cubic root of 439902664 is about 760.5344025341.

The spelling of 439902664 in words is "four hundred thirty-nine million, nine hundred two thousand, six hundred sixty-four".