13127949 has 12 divisors (see below), whose sum is σ = 18994716. Its totient is φ = 8737152.

The previous prime is 13127929. The next prime is 13127951. The reversal of 13127949 is 94972131.

It can be written as a sum of positive squares in 2 ways, for example, as 11902500 + 1225449 = 3450^2 + 1107^2 .

It is not a de Polignac number, because 13127949 - 2⁸ = 13127693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13127929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8047 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (1582893).

Almost surely, 2^13127949 is an apocalyptic number.

It is an amenable number.

13127949 is a deficient number, since it is larger than the sum of its proper divisors (5866767).

13127949 is a wasteful number, since it uses less digits than its factorization.

13127949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2476 (or 2473 counting only the distinct ones).

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

The square root of 13127949 is about 3623.2511643550. The cubic root of 13127949 is about 235.9023643335.

It can be divided in two parts, 131279 and 49, that added together give a triangular number (131328 = T₅₁₂).

The spelling of 13127949 in words is "thirteen million, one hundred twenty-seven thousand, nine hundred forty-nine".