63983931 has 8 divisors (see below), whose sum is σ = 93067584. Its totient is φ = 38778120.

The previous prime is 63983923. The next prime is 63983951. The reversal of 63983931 is 13938936.

63983931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63983931 - 2³ = 63983923 is a prime.

It is a super-2 number, since 2×63983931² = 8187886852425522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (63983921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 969421 + ... + 969486.

It is an arithmetic number, because the mean of its divisors is an integer number (11633448).

Almost surely, 2^63983931 is an apocalyptic number.

63983931 is a deficient number, since it is larger than the sum of its proper divisors (29083653).

63983931 is a wasteful number, since it uses less digits than its factorization.

63983931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938921.

The product of its digits is 104976, while the sum is 42.

The square root of 63983931 is about 7998.9956244519. The cubic root of 63983931 is about 399.9665201145.

The spelling of 63983931 in words is "sixty-three million, nine hundred eighty-three thousand, nine hundred thirty-one".