13139877 has 16 divisors (see below), whose sum is σ = 18874368. Its totient is φ = 8107440.

The previous prime is 13139873. The next prime is 13139879. The reversal of 13139877 is 77893131.

It is a happy number.

13139877 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13139877 - 2² = 13139873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 933 + ... + 5210.

It is an arithmetic number, because the mean of its divisors is an integer number (1179648).

Almost surely, 2^13139877 is an apocalyptic number.

It is an amenable number.

13139877 is a deficient number, since it is larger than the sum of its proper divisors (5734491).

13139877 is a wasteful number, since it uses less digits than its factorization.

13139877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6200.

The product of its digits is 31752, while the sum is 39.

The square root of 13139877 is about 3624.8968261180. The cubic root of 13139877 is about 235.9737893423.

The spelling of 13139877 in words is "thirteen million, one hundred thirty-nine thousand, eight hundred seventy-seven".