870213099 has 12 divisors (see below), whose sum is σ = 1349718504. Its totient is φ = 497264544.

The previous prime is 870213089. The next prime is 870213137. The reversal of 870213099 is 990312078.

It is not a de Polignac number, because 870213099 - 2¹⁶ = 870147563 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870213049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2959762 + ... + 2960055.

It is an arithmetic number, because the mean of its divisors is an integer number (112476542).

Almost surely, 2^870213099 is an apocalyptic number.

870213099 is a deficient number, since it is larger than the sum of its proper divisors (479505405).

870213099 is a wasteful number, since it uses less digits than its factorization.

870213099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919834 (or 5919827 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 870213099 is about 29499.3745526918. The cubic root of 870213099 is about 954.7182082079.

The spelling of 870213099 in words is "eight hundred seventy million, two hundred thirteen thousand, ninety-nine".