13139626 has 4 divisors (see below), whose sum is σ = 19709442. Its totient is φ = 6569812.

The previous prime is 13139617. The next prime is 13139627. The reversal of 13139626 is 62693131.

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

It can be written as a sum of positive squares in only one way, i.e., 10080625 + 3059001 = 3175^2 + 1749^2 .

It is not an unprimeable number, because it can be changed into a prime (13139627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3284905 + ... + 3284908.

Almost surely, 2^13139626 is an apocalyptic number.

13139626 is a deficient number, since it is larger than the sum of its proper divisors (6569816).

13139626 is an equidigital number, since it uses as much as digits as its factorization.

13139626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569815.

The product of its digits is 5832, while the sum is 31.

The square root of 13139626 is about 3624.8622042776. The cubic root of 13139626 is about 235.9722867966.

The spelling of 13139626 in words is "thirteen million, one hundred thirty-nine thousand, six hundred twenty-six".