921167996 has 12 divisors (see below), whose sum is σ = 1842336048. Its totient is φ = 394786272.

The previous prime is 921167983. The next prime is 921167999. The reversal of 921167996 is 699761129.

921167996 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921167999) by changing a digit.

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, 16449401 + ... + 16449456.

It is an arithmetic number, because the mean of its divisors is an integer number (153528004).

Almost surely, 2^921167996 is an apocalyptic number.

It is an amenable number.

921167996 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

921167996 is a wasteful number, since it uses less digits than its factorization.

921167996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32898868 (or 32898866 counting only the distinct ones).

The product of its digits is 367416, while the sum is 50.

The square root of 921167996 is about 30350.7495129857. The cubic root of 921167996 is about 973.0002390687. Note that the first 3 decimals are identical.

The spelling of 921167996 in words is "nine hundred twenty-one million, one hundred sixty-seven thousand, nine hundred ninety-six".