63139963 has 8 divisors (see below), whose sum is σ = 66071936. Its totient is φ = 60264000.

The previous prime is 63139961. The next prime is 63139969. The reversal of 63139963 is 36993136.

It is a happy number.

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

It is not a de Polignac number, because 63139963 - 2¹ = 63139961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63139961) 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, 11688 + ... + 16213.

It is an arithmetic number, because the mean of its divisors is an integer number (8258992).

Almost surely, 2^63139963 is an apocalyptic number.

63139963 is a deficient number, since it is larger than the sum of its proper divisors (2931973).

63139963 is a wasteful number, since it uses less digits than its factorization.

63139963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28005.

The product of its digits is 78732, while the sum is 40.

The square root of 63139963 is about 7946.0658819318. The cubic root of 63139963 is about 398.2001699258.

The spelling of 63139963 in words is "sixty-three million, one hundred thirty-nine thousand, nine hundred sixty-three".