444985920 has 112 divisors (see below), whose sum is σ = 1569841920. Its totient is φ = 118660608.

The previous prime is 444985913. The next prime is 444985949. The reversal of 444985920 is 29589444.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17112 + ... + 34391.

Almost surely, 2^444985920 is an apocalyptic number.

444985920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444985920 is an abundant number, since it is smaller than the sum of its proper divisors (1124856000).

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

444985920 is a wasteful number, since it uses less digits than its factorization.

444985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51529 (or 51513 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The square root of 444985920 is about 21094.6893790831. The cubic root of 444985920 is about 763.4526199847.

The spelling of 444985920 in words is "four hundred forty-four million, nine hundred eighty-five thousand, nine hundred twenty".