999972332 has 12 divisors (see below), whose sum is σ = 1806401856. Its totient is φ = 483857520.

The previous prime is 999972319. The next prime is 999972361. The reversal of 999972332 is 233279999.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4032023 + ... + 4032270.

It is an arithmetic number, because the mean of its divisors is an integer number (150533488).

Almost surely, 2^999972332 is an apocalyptic number.

It is an amenable number.

999972332 is a deficient number, since it is larger than the sum of its proper divisors (806429524).

999972332 is a wasteful number, since it uses less digits than its factorization.

999972332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8064328 (or 8064326 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 53.

The square root of 999972332 is about 31622.3391291663. The cubic root of 999972332 is about 999.9907772483.

The spelling of 999972332 in words is "nine hundred ninety-nine million, nine hundred seventy-two thousand, three hundred thirty-two".