869401512 has 144 divisors (see below), whose sum is σ = 2840816160. Its totient is φ = 248373216.

The previous prime is 869401483. The next prime is 869401513. The reversal of 869401512 is 215104968.

It is a super-2 number, since 2×869401512² = 1511717978135772288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (869401513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 90693 + ... + 99819.

It is an arithmetic number, because the mean of its divisors is an integer number (19727890).

Almost surely, 2^869401512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869401512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420408080).

869401512 is an abundant number, since it is smaller than the sum of its proper divisors (1971414648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869401512 is a wasteful number, since it uses less digits than its factorization.

869401512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9162 (or 9139 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 869401512 is about 29485.6153403655. The cubic root of 869401512 is about 954.4213162202.

The spelling of 869401512 in words is "eight hundred sixty-nine million, four hundred one thousand, five hundred twelve".