944921664 has 84 divisors (see below), whose sum is σ = 2795869440. Its totient is φ = 304807680.

The previous prime is 944921657. The next prime is 944921669. The reversal of 944921664 is 466129449.

944921664 is a `hidden beast` number, since 94 + 492 + 16 + 64 = 666.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (944921669) by changing a digit.

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, 8604 + ... + 44315.

It is an arithmetic number, because the mean of its divisors is an integer number (33284160).

Almost surely, 2^944921664 is an apocalyptic number.

It is an amenable number.

944921664 is an abundant number, since it is smaller than the sum of its proper divisors (1850947776).

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

944921664 is a wasteful number, since it uses less digits than its factorization.

944921664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52968 (or 52955 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 944921664 is about 30739.5781363375. The cubic root of 944921664 is about 981.2927767252.

It can be divided in two parts, 9449 and 21664, that added together give a palindrome (31113).

The spelling of 944921664 in words is "nine hundred forty-four million, nine hundred twenty-one thousand, six hundred sixty-four".