858870426 has 16 divisors (see below), whose sum is σ = 1719419328. Its totient is φ = 286010400.

The previous prime is 858870391. The next prime is 858870431. The reversal of 858870426 is 624078858.

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, 63235 + ... + 75606.

It is an arithmetic number, because the mean of its divisors is an integer number (107463708).

Almost surely, 2^858870426 is an apocalyptic number.

858870426 is an abundant number, since it is smaller than the sum of its proper divisors (860548902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

858870426 is a wasteful number, since it uses less digits than its factorization.

858870426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139877.

The product of its (nonzero) digits is 860160, while the sum is 48.

The square root of 858870426 is about 29306.4911922257. The cubic root of 858870426 is about 950.5520064285.

The spelling of 858870426 in words is "eight hundred fifty-eight million, eight hundred seventy thousand, four hundred twenty-six".