863699994 has 48 divisors (see below), whose sum is σ = 1984568040. Its totient is φ = 270535680.

The previous prime is 863699981. The next prime is 863700001. The reversal of 863699994 is 499996368.

It can be written as a sum of positive squares in 4 ways, for example, as 475806969 + 387893025 = 21813^2 + 19695^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 231012 + ... + 234720.

Almost surely, 2^863699994 is an apocalyptic number.

863699994 is an abundant number, since it is smaller than the sum of its proper divisors (1120868046).

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

863699994 is a wasteful number, since it uses less digits than its factorization.

863699994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4495 (or 4492 counting only the distinct ones).

The product of its digits is 22674816, while the sum is 63.

The square root of 863699994 is about 29388.7732646329. The cubic root of 863699994 is about 952.3303800302.

The spelling of 863699994 in words is "eight hundred sixty-three million, six hundred ninety-nine thousand, nine hundred ninety-four".