869599989401 has 32 divisors (see below), whose sum is σ = 1082108160000. Its totient is φ = 686564628480.

The previous prime is 869599989383. The next prime is 869599989409. The reversal of 869599989401 is 104989995968.

869599989401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 869599989401 - 2²⁶ = 869532880537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (869599989409) 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, 6936725 + ... + 7060973.

It is an arithmetic number, because the mean of its divisors is an integer number (33815880000).

Almost surely, 2^869599989401 is an apocalyptic number.

It is an amenable number.

869599989401 is a deficient number, since it is larger than the sum of its proper divisors (212508170599).

869599989401 is a wasteful number, since it uses less digits than its factorization.

869599989401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127169.

The product of its (nonzero) digits is 453496320, while the sum is 77.

The spelling of 869599989401 in words is "eight hundred sixty-nine billion, five hundred ninety-nine million, nine hundred eighty-nine thousand, four hundred one".