870085434 has 16 divisors (see below), whose sum is σ = 1800177120. Its totient is φ = 280027440.

The previous prime is 870085429. The next prime is 870085459. The reversal of 870085434 is 434580078.

It is a junction number, because it is equal to n+sod(n) for n = 870085392 and 870085401.

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, 2500072 + ... + 2500419.

It is an arithmetic number, because the mean of its divisors is an integer number (112511070).

Almost surely, 2^870085434 is an apocalyptic number.

870085434 is an abundant number, since it is smaller than the sum of its proper divisors (930091686).

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

870085434 is a wasteful number, since it uses less digits than its factorization.

870085434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000525.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 870085434 is about 29497.2106138869. The cubic root of 870085434 is about 954.6715184714.

The spelling of 870085434 in words is "eight hundred seventy million, eighty-five thousand, four hundred thirty-four".