439956664 has 32 divisors (see below), whose sum is σ = 945377280. Its totient is φ = 188030304.

The previous prime is 439956661. The next prime is 439956701. The reversal of 439956664 is 466659934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439956661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9849 + ... + 31255.

It is an arithmetic number, because the mean of its divisors is an integer number (29543040).

Almost surely, 2^439956664 is an apocalyptic number.

It is an amenable number.

439956664 is an abundant number, since it is smaller than the sum of its proper divisors (505420616).

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

439956664 is a wasteful number, since it uses less digits than its factorization.

439956664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21787 (or 21783 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 52.

The square root of 439956664 is about 20975.1439565978. The cubic root of 439956664 is about 760.5655209161.

The spelling of 439956664 in words is "four hundred thirty-nine million, nine hundred fifty-six thousand, six hundred sixty-four".