869539540 has 48 divisors (see below), whose sum is σ = 1860808320. Its totient is φ = 341251200.

The previous prime is 869539537. The next prime is 869539589. The reversal of 869539540 is 45935968.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248926 + ... + 252394.

It is an arithmetic number, because the mean of its divisors is an integer number (38766840).

Almost surely, 2^869539540 is an apocalyptic number.

It is an amenable number.

869539540 is an abundant number, since it is smaller than the sum of its proper divisors (991268780).

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

869539540 is a wasteful number, since it uses less digits than its factorization.

869539540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3712 (or 3710 counting only the distinct ones).

The product of its (nonzero) digits is 1166400, while the sum is 49.

The square root of 869539540 is about 29487.9558464130. The cubic root of 869539540 is about 954.4718221880.

The spelling of 869539540 in words is "eight hundred sixty-nine million, five hundred thirty-nine thousand, five hundred forty".