13139349129 has 27 divisors (see below), whose sum is σ = 20040496749. Its totient is φ = 8294409720.

The previous prime is 13139349077. The next prime is 13139349131. The reversal of 13139349129 is 92194393131.

It is a happy number.

The square root of 13139349129 is 114627.

It is a perfect power (a square), and thus also a powerful number.

13139349129 is a `hidden beast` number, since 1 + 3 + 139 + 3 + 491 + 29 = 666.

It is not a de Polignac number, because 13139349129 - 2⁹ = 13139348617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13139349149) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6532734 + ... + 6534744.

Almost surely, 2^13139349129 is an apocalyptic number.

13139349129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13139349129 is the 114627-th square number.

13139349129 is the 57314-th centered octagonal number.

It is an amenable number.

13139349129 is a deficient number, since it is larger than the sum of its proper divisors (6901147620).

13139349129 is an frugal number, since it uses more digits than its factorization.

13139349129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4066 (or 2033 counting only the distinct ones).

The product of its digits is 157464, while the sum is 45.

The spelling of 13139349129 in words is "thirteen billion, one hundred thirty-nine million, three hundred forty-nine thousand, one hundred twenty-nine".