438979632 has 200 divisors, whose sum is σ = 1429585584. Its totient is φ = 115379712.

The previous prime is 438979609. The next prime is 438979643. The reversal of 438979632 is 236979834.

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 39 ways as a sum of consecutive naturals, for example, 1498078 + ... + 1498370.

Almost surely, 2^438979632 is an apocalyptic number.

438979632 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 438979632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (714792792).

438979632 is an abundant number, since it is smaller than the sum of its proper divisors (990605952).

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

438979632 is a wasteful number, since it uses less digits than its factorization.

438979632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 318 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 51.

The square root of 438979632 is about 20951.8407783183. The cubic root of 438979632 is about 760.0020960238.

The spelling of 438979632 in words is "four hundred thirty-eight million, nine hundred seventy-nine thousand, six hundred thirty-two".