921111044 has 24 divisors (see below), whose sum is σ = 1853533248. Its totient is φ = 392338080.

The previous prime is 921110999. The next prime is 921111073. The reversal of 921111044 is 440111129.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96347 + ... + 105474.

It is an arithmetic number, because the mean of its divisors is an integer number (77230552).

Almost surely, 2^921111044 is an apocalyptic number.

It is an amenable number.

921111044 is an abundant number, since it is smaller than the sum of its proper divisors (932422204).

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

921111044 is a wasteful number, since it uses less digits than its factorization.

921111044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201995 (or 201993 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 921111044 is about 30349.8112679470. The cubic root of 921111044 is about 972.9801864645.

The spelling of 921111044 in words is "nine hundred twenty-one million, one hundred eleven thousand, forty-four".