870431898 has 16 divisors (see below), whose sum is σ = 1989558720. Its totient is φ = 248694816.

The previous prime is 870431867. The next prime is 870431951. The reversal of 870431898 is 898134078.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10362243 + ... + 10362326.

It is an arithmetic number, because the mean of its divisors is an integer number (124347420).

Almost surely, 2^870431898 is an apocalyptic number.

870431898 is an abundant number, since it is smaller than the sum of its proper divisors (1119126822).

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

870431898 is a wasteful number, since it uses less digits than its factorization.

870431898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20724581.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 870431898 is about 29503.0828558644. The cubic root of 870431898 is about 954.7982169187.

The spelling of 870431898 in words is "eight hundred seventy million, four hundred thirty-one thousand, eight hundred ninety-eight".