858860995492 has 12 divisors (see below), whose sum is σ = 1504165584460. Its totient is φ = 429099399936.

The previous prime is 858860995477. The next prime is 858860995547. The reversal of 858860995492 is 294599068858.

858860995492 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 849394483876 + 9466511616 = 921626^2 + 97296^2 .

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, 82768617 + ... + 82778992.

Almost surely, 2^858860995492 is an apocalyptic number.

It is an amenable number.

858860995492 is a deficient number, since it is larger than the sum of its proper divisors (645304588968).

858860995492 is a wasteful number, since it uses less digits than its factorization.

858860995492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165548910 (or 165548908 counting only the distinct ones).

The product of its (nonzero) digits is 447897600, while the sum is 73.

The spelling of 858860995492 in words is "eight hundred fifty-eight billion, eight hundred sixty million, nine hundred ninety-five thousand, four hundred ninety-two".