869115312 has 320 divisors, whose sum is σ = 2841484800. Its totient is φ = 252564480.

The previous prime is 869115257. The next prime is 869115337. The reversal of 869115312 is 213511968.

It is a super-2 number, since 2×869115312² = 1510722851105714688, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14247762 + ... + 14247822.

It is an arithmetic number, because the mean of its divisors is an integer number (8879640).

Almost surely, 2^869115312 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 869115312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1420742400).

869115312 is an abundant number, since it is smaller than the sum of its proper divisors (1972369488).

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

869115312 is a wasteful number, since it uses less digits than its factorization.

869115312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193 (or 181 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 869115312 is about 29480.7617269296. The cubic root of 869115312 is about 954.3165754470.

The spelling of 869115312 in words is "eight hundred sixty-nine million, one hundred fifteen thousand, three hundred twelve".