869900790 has 32 divisors (see below), whose sum is σ = 2277559296. Its totient is φ = 210884960.

The previous prime is 869900789. The next prime is 869900797. The reversal of 869900790 is 97009968.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869900797) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1317702 + ... + 1318361.

It is an arithmetic number, because the mean of its divisors is an integer number (71173728).

Almost surely, 2^869900790 is an apocalyptic number.

869900790 is an abundant number, since it is smaller than the sum of its proper divisors (1407658506).

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

869900790 is a wasteful number, since it uses less digits than its factorization.

869900790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2636084.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 869900790 is about 29494.0805925528. The cubic root of 869900790 is about 954.6039822534.

The spelling of 869900790 in words is "eight hundred sixty-nine million, nine hundred thousand, seven hundred ninety".