870998289 has 32 divisors (see below), whose sum is σ = 1372422144. Its totient is φ = 480824640.

The previous prime is 870998273. The next prime is 870998309. The reversal of 870998289 is 982899078.

It is not a de Polignac number, because 870998289 - 2⁴ = 870998273 is a prime.

It is not an unprimeable number, because it can be changed into a prime (870998269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 717447 + ... + 718659.

It is an arithmetic number, because the mean of its divisors is an integer number (42888192).

Almost surely, 2^870998289 is an apocalyptic number.

It is an amenable number.

870998289 is a deficient number, since it is larger than the sum of its proper divisors (501423855).

870998289 is a wasteful number, since it uses less digits than its factorization.

870998289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357.

The product of its (nonzero) digits is 5225472, while the sum is 60.

The square root of 870998289 is about 29512.6801392215. The cubic root of 870998289 is about 955.0052681014.

The spelling of 870998289 in words is "eight hundred seventy million, nine hundred ninety-eight thousand, two hundred eighty-nine".