13149917 has 6 divisors (see below), whose sum is σ = 14454174. Its totient is φ = 11954360.

The previous prime is 13149901. The next prime is 13149931. The reversal of 13149917 is 71994131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12859396 + 290521 = 3586^2 + 539^2 .

It is not a de Polignac number, because 13149917 - 2⁴ = 13149901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13149937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54218 + ... + 54459.

It is an arithmetic number, because the mean of its divisors is an integer number (2409029).

Almost surely, 2^13149917 is an apocalyptic number.

It is an amenable number.

13149917 is a deficient number, since it is larger than the sum of its proper divisors (1304257).

13149917 is a wasteful number, since it uses less digits than its factorization.

13149917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108699 (or 108688 counting only the distinct ones).

The product of its digits is 6804, while the sum is 35.

The square root of 13149917 is about 3626.2814286815. The cubic root of 13149917 is about 236.0338754877.

The spelling of 13149917 in words is "thirteen million, one hundred forty-nine thousand, nine hundred seventeen".