439679879436 has 144 divisors (see below), whose sum is σ = 1215520035072. Its totient is φ = 123304809600.

The previous prime is 439679879411. The next prime is 439679879449. The reversal of 439679879436 is 634978976934.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17455131 + ... + 17480301.

Almost surely, 2^439679879436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 439679879436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (607760017536).

439679879436 is an abundant number, since it is smaller than the sum of its proper divisors (775840155636).

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

439679879436 is a wasteful number, since it uses less digits than its factorization.

439679879436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25740 (or 25731 counting only the distinct ones).

The product of its digits is 1481421312, while the sum is 75.

The spelling of 439679879436 in words is "four hundred thirty-nine billion, six hundred seventy-nine million, eight hundred seventy-nine thousand, four hundred thirty-six".