869395572 has 48 divisors (see below), whose sum is σ = 2386581120. Its totient is φ = 272750976.

The previous prime is 869395547. The next prime is 869395591. The reversal of 869395572 is 275593968.

869395572 is a `hidden beast` number, since 8 + 69 + 3 + 9 + 5 + 572 = 666.

It is a super-2 number, since 2×869395572² = 1511697321226414368, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 234928 + ... + 238599.

It is an arithmetic number, because the mean of its divisors is an integer number (49720440).

Almost surely, 2^869395572 is an apocalyptic number.

It is an amenable number.

869395572 is an abundant number, since it is smaller than the sum of its proper divisors (1517185548).

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

869395572 is a wasteful number, since it uses less digits than its factorization.

869395572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473557 (or 473549 counting only the distinct ones).

The product of its digits is 4082400, while the sum is 54.

The square root of 869395572 is about 29485.5146131113. The cubic root of 869395572 is about 954.4191425887.

The spelling of 869395572 in words is "eight hundred sixty-nine million, three hundred ninety-five thousand, five hundred seventy-two".