870081249 has 16 divisors (see below), whose sum is σ = 1190967552. Its totient is φ = 564753408.

The previous prime is 870081227. The next prime is 870081253. The reversal of 870081249 is 942180078.

It is not a de Polignac number, because 870081249 - 2⁸ = 870080993 is a prime.

It is a super-2 number, since 2×870081249² = 1514082759722800002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (870081259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11227 + ... + 43199.

It is an arithmetic number, because the mean of its divisors is an integer number (74435472).

Almost surely, 2^870081249 is an apocalyptic number.

It is an amenable number.

870081249 is a deficient number, since it is larger than the sum of its proper divisors (320886303).

870081249 is a wasteful number, since it uses less digits than its factorization.

870081249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32216.

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 870081249 is about 29497.1396748905. The cubic root of 870081249 is about 954.6699878528.

The spelling of 870081249 in words is "eight hundred seventy million, eighty-one thousand, two hundred forty-nine".