13139246 has 4 divisors (see below), whose sum is σ = 19708872. Its totient is φ = 6569622.

The previous prime is 13139237. The next prime is 13139251. The reversal of 13139246 is 64293131.

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

It is a congruent number.

It is an unprimeable number.

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, 3284810 + ... + 3284813.

It is an arithmetic number, because the mean of its divisors is an integer number (4927218).

Almost surely, 2^13139246 is an apocalyptic number.

13139246 is a deficient number, since it is larger than the sum of its proper divisors (6569626).

13139246 is an equidigital number, since it uses as much as digits as its factorization.

13139246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6569625.

The product of its digits is 3888, while the sum is 29.

The square root of 13139246 is about 3624.8097881130. The cubic root of 13139246 is about 235.9700119897.

The spelling of 13139246 in words is "thirteen million, one hundred thirty-nine thousand, two hundred forty-six".