439872464 has 40 divisors (see below), whose sum is σ = 896151720. Its totient is φ = 208857600.

The previous prime is 439872449. The next prime is 439872469. The reversal of 439872464 is 464278934.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27457600 + 412414864 = 5240^2 + 20308^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (439872469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20534 + ... + 36074.

It is an arithmetic number, because the mean of its divisors is an integer number (22403793).

Almost surely, 2^439872464 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 439872464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448075860).

439872464 is an abundant number, since it is smaller than the sum of its proper divisors (456279256).

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

439872464 is a wasteful number, since it uses less digits than its factorization.

439872464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15639 (or 15633 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 47.

The square root of 439872464 is about 20973.1367229606. The cubic root of 439872464 is about 760.5169981805.

The spelling of 439872464 in words is "four hundred thirty-nine million, eight hundred seventy-two thousand, four hundred sixty-four".