63139902 has 32 divisors (see below), whose sum is σ = 149299200. Its totient is φ = 17417568.

The previous prime is 63139897. The next prime is 63139903. The reversal of 63139902 is 20993136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63139903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24702 + ... + 27137.

It is an arithmetic number, because the mean of its divisors is an integer number (4665600).

Almost surely, 2^63139902 is an apocalyptic number.

63139902 is an abundant number, since it is smaller than the sum of its proper divisors (86159298).

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

63139902 is a wasteful number, since it uses less digits than its factorization.

63139902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51880.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 63139902 is about 7946.0620435534. The cubic root of 63139902 is about 398.2000416910.

The spelling of 63139902 in words is "sixty-three million, one hundred thirty-nine thousand, nine hundred two".