858452972 has 24 divisors (see below), whose sum is σ = 1619018016. Its totient is φ = 395923968.

The previous prime is 858452951. The next prime is 858452993. The reversal of 858452972 is 279254858.

It is an interprime number because it is at equal distance from previous prime (858452951) and next prime (858452993).

It is a self number, because there is not a number n which added to its sum of digits gives 858452972.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78428 + ... + 88700.

It is an arithmetic number, because the mean of its divisors is an integer number (67459084).

Almost surely, 2^858452972 is an apocalyptic number.

It is an amenable number.

858452972 is a deficient number, since it is larger than the sum of its proper divisors (760565044).

858452972 is a wasteful number, since it uses less digits than its factorization.

858452972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11897 (or 11895 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 858452972 is about 29299.3681160533. The cubic root of 858452972 is about 950.3979761919.

The spelling of 858452972 in words is "eight hundred fifty-eight million, four hundred fifty-two thousand, nine hundred seventy-two".