869840552 has 96 divisors (see below), whose sum is σ = 1947450600. Its totient is φ = 363073536.

The previous prime is 869840551. The next prime is 869840567. The reversal of 869840552 is 255048968.

It can be written as a sum of positive squares in 4 ways, for example, as 296046436 + 573794116 = 17206^2 + 23954^2 .

It is a super-3 number, since 3×869840552³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 869840497 and 869840506.

It is not an unprimeable number, because it can be changed into a prime (869840551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3233474 + ... + 3233742.

Almost surely, 2^869840552 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 869840552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (973725300).

869840552 is an abundant number, since it is smaller than the sum of its proper divisors (1077610048).

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

869840552 is a wasteful number, since it uses less digits than its factorization.

869840552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 869840552 is about 29493.0593869134. The cubic root of 869840552 is about 954.5819472648.

The spelling of 869840552 in words is "eight hundred sixty-nine million, eight hundred forty thousand, five hundred fifty-two".