63139983 has 24 divisors (see below), whose sum is σ = 89629488. Its totient is φ = 39529728.

The previous prime is 63139981. The next prime is 63140003. The reversal of 63139983 is 38993136.

It is not a de Polignac number, because 63139983 - 2¹ = 63139981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63139981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187191 + ... + 187527.

It is an arithmetic number, because the mean of its divisors is an integer number (3734562).

Almost surely, 2^63139983 is an apocalyptic number.

63139983 is a deficient number, since it is larger than the sum of its proper divisors (26489505).

63139983 is a wasteful number, since it uses less digits than its factorization.

63139983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551 (or 532 counting only the distinct ones).

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

The square root of 63139983 is about 7946.0671404161. The cubic root of 63139983 is about 398.2002119700.

The spelling of 63139983 in words is "sixty-three million, one hundred thirty-nine thousand, nine hundred eighty-three".