869974479967 has 4 divisors (see below), whose sum is σ = 869976622800. Its totient is φ = 869972337136.

The previous prime is 869974479943. The next prime is 869974479991. The reversal of 869974479967 is 769974479968.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (869974479943) and next prime (869974479991).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-869974479967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869974479667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255118 + ... + 1343515.

It is an arithmetic number, because the mean of its divisors is an integer number (217494155700).

Almost surely, 2^869974479967 is an apocalyptic number.

869974479967 is a deficient number, since it is larger than the sum of its proper divisors (2142833).

869974479967 is a wasteful number, since it uses less digits than its factorization.

869974479967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142832.

The product of its digits is 10369949184, while the sum is 85.

Subtracting from 869974479967 its reverse (769974479968), we obtain a palindrome (99999999999).

The spelling of 869974479967 in words is "eight hundred sixty-nine billion, nine hundred seventy-four million, four hundred seventy-nine thousand, nine hundred sixty-seven".