869839690 has 16 divisors (see below), whose sum is σ = 1602124128. Its totient is φ = 339844176.

The previous prime is 869839681. The next prime is 869839699. The reversal of 869839690 is 96938968.

It is an interprime number because it is at equal distance from previous prime (869839681) and next prime (869839699).

It is a super-2 number, since 2×869839690² = 1513242172598592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (869839699) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1011012 + ... + 1011871.

It is an arithmetic number, because the mean of its divisors is an integer number (100132758).

Almost surely, 2^869839690 is an apocalyptic number.

869839690 is a deficient number, since it is larger than the sum of its proper divisors (732284438).

869839690 is a wasteful number, since it uses less digits than its factorization.

869839690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022933.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The square root of 869839690 is about 29493.0447733021. The cubic root of 869839690 is about 954.5816319388.

The spelling of 869839690 in words is "eight hundred sixty-nine million, eight hundred thirty-nine thousand, six hundred ninety".