860793921 has 48 divisors (see below), whose sum is σ = 1398720960. Its totient is φ = 506459520.

The previous prime is 860793911. The next prime is 860793943. The reversal of 860793921 is 129397068.

860793921 is a `hidden beast` number, since 8 + 607 + 9 + 39 + 2 + 1 = 666.

It is not a de Polignac number, because 860793921 - 2⁵ = 860793889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (860793911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 361866 + ... + 364236.

It is an arithmetic number, because the mean of its divisors is an integer number (29140020).

Almost surely, 2^860793921 is an apocalyptic number.

It is an amenable number.

860793921 is a deficient number, since it is larger than the sum of its proper divisors (537927039).

860793921 is a wasteful number, since it uses less digits than its factorization.

860793921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2526 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 860793921 is about 29339.2897153288. The cubic root of 860793921 is about 951.2610845952.

It can be divided in two parts, 86079 and 3921, that added together give a square (90000 = 300²).

The spelling of 860793921 in words is "eight hundred sixty million, seven hundred ninety-three thousand, nine hundred twenty-one".