870972869 has 16 divisors (see below), whose sum is σ = 990764544. Its totient is φ = 759931200.

The previous prime is 870972857. The next prime is 870972877. The reversal of 870972869 is 968279078.

It is a cyclic number.

It is not a de Polignac number, because 870972869 - 2⁴ = 870972853 is a prime.

It is a super-2 number, since 2×870972869² = 1517187477068182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (870972829) 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, 7802 + ... + 42459.

It is an arithmetic number, because the mean of its divisors is an integer number (61922784).

Almost surely, 2^870972869 is an apocalyptic number.

It is an amenable number.

870972869 is a deficient number, since it is larger than the sum of its proper divisors (119791675).

870972869 is a wasteful number, since it uses less digits than its factorization.

870972869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50348.

The product of its (nonzero) digits is 3048192, while the sum is 56.

The square root of 870972869 is about 29512.2494737355. The cubic root of 870972869 is about 954.9959774325.

The spelling of 870972869 in words is "eight hundred seventy million, nine hundred seventy-two thousand, eight hundred sixty-nine".