869974479969 has 8 divisors (see below), whose sum is σ = 1325675398080. Its totient is φ = 497128274256.

The previous prime is 869974479943. The next prime is 869974479991. The reversal of 869974479969 is 969974479968.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 869974479969 - 2¹¹ = 869974477921 is a prime.

It is a super-2 number, since 2×869974479969² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869974479469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20713678074 + ... + 20713678115.

It is an arithmetic number, because the mean of its divisors is an integer number (165709424760).

Almost surely, 2^869974479969 is an apocalyptic number.

It is an amenable number.

869974479969 is a deficient number, since it is larger than the sum of its proper divisors (455700918111).

869974479969 is a wasteful number, since it uses less digits than its factorization.

869974479969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41427356199.

The product of its digits is 13332791808, while the sum is 87.

Subtracting 869974479969 from its reverse (969974479968), we obtain a palindrome (99999999999).

The spelling of 869974479969 in words is "eight hundred sixty-nine billion, nine hundred seventy-four million, four hundred seventy-nine thousand, nine hundred sixty-nine".