921940712 has 32 divisors (see below), whose sum is σ = 2155187520. Its totient is φ = 359197440.

The previous prime is 921940661. The next prime is 921940727. The reversal of 921940712 is 217049129.

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, 747713 + ... + 748944.

It is an arithmetic number, because the mean of its divisors is an integer number (67349610).

Almost surely, 2^921940712 is an apocalyptic number.

It is an amenable number.

921940712 is an abundant number, since it is smaller than the sum of its proper divisors (1233246808).

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

921940712 is a wasteful number, since it uses less digits than its factorization.

921940712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496681 (or 1496677 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 921940712 is about 30363.4766125357. The cubic root of 921940712 is about 973.2722280815.

The spelling of 921940712 in words is "nine hundred twenty-one million, nine hundred forty thousand, seven hundred twelve".