63863939 has 8 divisors (see below), whose sum is σ = 66723072. Its totient is φ = 61011720.

The previous prime is 63863923. The next prime is 63863957. The reversal of 63863939 is 93936836.

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

It is a cyclic number.

It is not a de Polignac number, because 63863939 - 2⁴ = 63863923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 63863893 and 63863902.

It is not an unprimeable number, because it can be changed into a prime (63863909) 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, 28904 + ... + 31034.

It is an arithmetic number, because the mean of its divisors is an integer number (8340384).

Almost surely, 2^63863939 is an apocalyptic number.

63863939 is a deficient number, since it is larger than the sum of its proper divisors (2859133).

63863939 is a wasteful number, since it uses less digits than its factorization.

63863939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457.

The product of its digits is 629856, while the sum is 47.

The square root of 63863939 is about 7991.4916630126. The cubic root of 63863939 is about 399.7163384712.

The spelling of 63863939 in words is "sixty-three million, eight hundred sixty-three thousand, nine hundred thirty-nine".