440479638 has 24 divisors (see below), whose sum is σ = 954867576. Its totient is φ = 146750400.

The previous prime is 440479621. The next prime is 440479657. The reversal of 440479638 is 836974044.

440479638 is a `hidden beast` number, since 4 + 4 + 0 + 4 + 7 + 9 + 638 = 666.

It is a super-2 number, since 2×440479638² = 388044622985222088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 440479593 and 440479602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37518 + ... + 47838.

It is an arithmetic number, because the mean of its divisors is an integer number (39786149).

Almost surely, 2^440479638 is an apocalyptic number.

440479638 is an abundant number, since it is smaller than the sum of its proper divisors (514387938).

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

440479638 is a wasteful number, since it uses less digits than its factorization.

440479638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12700 (or 12697 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 440479638 is about 20987.6067716164. The cubic root of 440479638 is about 760.8667615653.

The spelling of 440479638 in words is "four hundred forty million, four hundred seventy-nine thousand, six hundred thirty-eight".