921064340 has 48 divisors (see below), whose sum is σ = 2248041600. Its totient is φ = 310438272.

The previous prime is 921064337. The next prime is 921064351. The reversal of 921064340 is 43460129.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47495 + ... + 64014.

It is an arithmetic number, because the mean of its divisors is an integer number (46834200).

Almost surely, 2^921064340 is an apocalyptic number.

It is an amenable number.

921064340 is an abundant number, since it is smaller than the sum of its proper divisors (1326977260).

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

921064340 is a wasteful number, since it uses less digits than its factorization.

921064340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111584 (or 111582 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 921064340 is about 30349.0418300150. The cubic root of 921064340 is about 972.9637415292.

The spelling of 921064340 in words is "nine hundred twenty-one million, sixty-four thousand, three hundred forty".