855964964 has 12 divisors (see below), whose sum is σ = 1563066624. Its totient is φ = 409374504.

The previous prime is 855964939. The next prime is 855964981. The reversal of 855964964 is 469469558.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4651892 + ... + 4652075.

It is an arithmetic number, because the mean of its divisors is an integer number (130255552).

Almost surely, 2^855964964 is an apocalyptic number.

It is an amenable number.

855964964 is a deficient number, since it is larger than the sum of its proper divisors (707101660).

855964964 is a wasteful number, since it uses less digits than its factorization.

855964964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9303994 (or 9303992 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 56.

The square root of 855964964 is about 29256.8789176153. The cubic root of 855964964 is about 949.4789253233.

The spelling of 855964964 in words is "eight hundred fifty-five million, nine hundred sixty-four thousand, nine hundred sixty-four".