439380864 has 96 divisors (see below), whose sum is σ = 1361669400. Its totient is φ = 135189504.

The previous prime is 439380839. The next prime is 439380881. The reversal of 439380864 is 468083934.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 307 + ... + 29645.

Almost surely, 2^439380864 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 439380864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680834700).

439380864 is an abundant number, since it is smaller than the sum of its proper divisors (922288536).

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

439380864 is a wasteful number, since it uses less digits than its factorization.

439380864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29372 (or 29357 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 439380864 is about 20961.4136927832. The cubic root of 439380864 is about 760.2335754825.

The spelling of 439380864 in words is "four hundred thirty-nine million, three hundred eighty thousand, eight hundred sixty-four".