869657472 has 160 divisors (see below), whose sum is σ = 2659207320. Its totient is φ = 281926656.

The previous prime is 869657431. The next prime is 869657479. The reversal of 869657472 is 274756968.

869657472 is a `hidden beast` number, since 8 + 69 + 6 + 574 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869657479) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 382483 + ... + 384749.

Almost surely, 2^869657472 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 869657472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1329603660).

869657472 is an abundant number, since it is smaller than the sum of its proper divisors (1789549848).

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

869657472 is a wasteful number, since it uses less digits than its factorization.

869657472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330 (or 2309 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 54.

The square root of 869657472 is about 29489.9554424892. The cubic root of 869657472 is about 954.5149705738.

The spelling of 869657472 in words is "eight hundred sixty-nine million, six hundred fifty-seven thousand, four hundred seventy-two".