957864021 has 8 divisors (see below), whose sum is σ = 1277393184. Its totient is φ = 638455440.

The previous prime is 957864007. The next prime is 957864079. The reversal of 957864021 is 120468759.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 957864021 - 2⁵ = 957863989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (957864421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9610 + ... + 44811.

It is an arithmetic number, because the mean of its divisors is an integer number (159674148).

Almost surely, 2^957864021 is an apocalyptic number.

It is an amenable number.

957864021 is a deficient number, since it is larger than the sum of its proper divisors (319529163).

957864021 is a wasteful number, since it uses less digits than its factorization.

957864021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60291.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 957864021 is about 30949.3783620932. The cubic root of 957864021 is about 985.7526507137.

The spelling of 957864021 in words is "nine hundred fifty-seven million, eight hundred sixty-four thousand, twenty-one".