863939652 has 48 divisors (see below), whose sum is σ = 2124138240. Its totient is φ = 272542752.

The previous prime is 863939641. The next prime is 863939669. The reversal of 863939652 is 256939368.

It is a super-2 number, since 2×863939652² = 1492783444595762208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 863939595 and 863939604.

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, 433803 + ... + 435789.

It is an arithmetic number, because the mean of its divisors is an integer number (44252880).

Almost surely, 2^863939652 is an apocalyptic number.

It is an amenable number.

863939652 is an abundant number, since it is smaller than the sum of its proper divisors (1260198588).

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

863939652 is a wasteful number, since it uses less digits than its factorization.

863939652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3920 (or 3918 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 51.

The square root of 863939652 is about 29392.8503551459. The cubic root of 863939652 is about 952.4184555538.

The spelling of 863939652 in words is "eight hundred sixty-three million, nine hundred thirty-nine thousand, six hundred fifty-two".