13139361 has 8 divisors (see below), whose sum is σ = 19465760. Its totient is φ = 8759556.

The previous prime is 13139341. The next prime is 13139369. The reversal of 13139361 is 16393131.

13139361 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13139361 - 2⁶ = 13139297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 486643 = 13139361 / (1 + 3 + 1 + 3 + 9 + 3 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13139369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 243295 + ... + 243348.

It is an arithmetic number, because the mean of its divisors is an integer number (2433220).

Almost surely, 2^13139361 is an apocalyptic number.

It is an amenable number.

13139361 is a deficient number, since it is larger than the sum of its proper divisors (6326399).

13139361 is an equidigital number, since it uses as much as digits as its factorization.

13139361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486652 (or 486646 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 13139361 is about 3624.8256509796. The cubic root of 13139361 is about 235.9707004227.

The spelling of 13139361 in words is "thirteen million, one hundred thirty-nine thousand, three hundred sixty-one".