921216926 has 16 divisors (see below), whose sum is σ = 1580154720. Its totient is φ = 394575840.

The previous prime is 921216913. The next prime is 921216931. The reversal of 921216926 is 629612129.

It is a self number, because there is not a number n which added to its sum of digits gives 921216926.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6656 + ... + 43436.

It is an arithmetic number, because the mean of its divisors is an integer number (98759670).

Almost surely, 2^921216926 is an apocalyptic number.

921216926 is a deficient number, since it is larger than the sum of its proper divisors (658937794).

921216926 is a wasteful number, since it uses less digits than its factorization.

921216926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38579.

The product of its digits is 23328, while the sum is 38.

The square root of 921216926 is about 30351.5555779271. Note that the first 4 decimals coincide. The cubic root of 921216926 is about 973.0174664941.

The spelling of 921216926 in words is "nine hundred twenty-one million, two hundred sixteen thousand, nine hundred twenty-six".