63903139 has 4 divisors (see below), whose sum is σ = 64009024. Its totient is φ = 63797256.

The previous prime is 63903113. The next prime is 63903163. The reversal of 63903139 is 93130936.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 63903139 - 2⁷ = 63903011 is a prime.

It is a super-2 number, since 2×63903139² = 8167222348106642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63903199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52032 + ... + 53245.

It is an arithmetic number, because the mean of its divisors is an integer number (16002256).

Almost surely, 2^63903139 is an apocalyptic number.

63903139 is a deficient number, since it is larger than the sum of its proper divisors (105885).

63903139 is a wasteful number, since it uses less digits than its factorization.

63903139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105884.

The product of its (nonzero) digits is 13122, while the sum is 34.

The square root of 63903139 is about 7993.9438952247. The cubic root of 63903139 is about 399.7981043625.

The spelling of 63903139 in words is "sixty-three million, nine hundred three thousand, one hundred thirty-nine".