63139811 has 4 divisors (see below), whose sum is σ = 72159792. Its totient is φ = 54119832.

The previous prime is 63139799. The next prime is 63139829. The reversal of 63139811 is 11893136.

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 63139811 - 2¹⁰ = 63138787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63139891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4509980 + ... + 4509993.

It is an arithmetic number, because the mean of its divisors is an integer number (18039948).

Almost surely, 2^63139811 is an apocalyptic number.

63139811 is a deficient number, since it is larger than the sum of its proper divisors (9019981).

63139811 is an equidigital number, since it uses as much as digits as its factorization.

63139811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9019980.

The product of its digits is 3888, while the sum is 32.

The square root of 63139811 is about 7946.0563174445. The cubic root of 63139811 is about 398.1998503898.

The spelling of 63139811 in words is "sixty-three million, one hundred thirty-nine thousand, eight hundred eleven".