863959930 has 16 divisors (see below), whose sum is σ = 1555480584. Its totient is φ = 345505600.

The previous prime is 863959903. The next prime is 863959931. The reversal of 863959930 is 39959368.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 692795041 + 171164889 = 26321^2 + 13083^2 .

It is not an unprimeable number, because it can be changed into a prime (863959931) 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, 60564 + ... + 73456.

Almost surely, 2^863959930 is an apocalyptic number.

863959930 is a deficient number, since it is larger than the sum of its proper divisors (691520654).

863959930 is a wasteful number, since it uses less digits than its factorization.

863959930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19601.

The product of its (nonzero) digits is 1574640, while the sum is 52.

The square root of 863959930 is about 29393.1953009536. The cubic root of 863959930 is about 952.4259070736.

The spelling of 863959930 in words is "eight hundred sixty-three million, nine hundred fifty-nine thousand, nine hundred thirty".