13129479 has 16 divisors (see below), whose sum is σ = 21219840. Its totient is φ = 7957080.

The previous prime is 13129477. The next prime is 13129483. The reversal of 13129479 is 97492131.

It is not a de Polignac number, because 13129479 - 2¹ = 13129477 is a prime.

It is a super-2 number, since 2×13129479² = 344766437622882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13129477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21807 + ... + 22400.

It is an arithmetic number, because the mean of its divisors is an integer number (1326240).

Almost surely, 2^13129479 is an apocalyptic number.

13129479 is a deficient number, since it is larger than the sum of its proper divisors (8090361).

13129479 is a wasteful number, since it uses less digits than its factorization.

13129479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44227 (or 44221 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13129479 is about 3623.4622945465. The cubic root of 13129479 is about 235.9115284103.

The spelling of 13129479 in words is "thirteen million, one hundred twenty-nine thousand, four hundred seventy-nine".