870459890 has 16 divisors (see below), whose sum is σ = 1572369408. Its totient is φ = 346952496.

The previous prime is 870459883. The next prime is 870459899. The reversal of 870459890 is 98954078.

It is not an unprimeable number, because it can be changed into a prime (870459899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150962 + ... + 156621.

It is an arithmetic number, because the mean of its divisors is an integer number (98273088).

Almost surely, 2^870459890 is an apocalyptic number.

870459890 is a deficient number, since it is larger than the sum of its proper divisors (701909518).

870459890 is a wasteful number, since it uses less digits than its factorization.

870459890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307873.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 870459890 is about 29503.5572431529. The cubic root of 870459890 is about 954.8084518473.

The spelling of 870459890 in words is "eight hundred seventy million, four hundred fifty-nine thousand, eight hundred ninety".