13313749 has 2 divisors, whose sum is σ = 13313750. Its totient is φ = 13313748.

The previous prime is 13313743. The next prime is 13313753. The reversal of 13313749 is 94731331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12830724 + 483025 = 3582^2 + 695^2 .

It is a cyclic number.

It is not a de Polignac number, because 13313749 - 2⁵ = 13313717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13313749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13313743) 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 as a sum of consecutive naturals, namely, 6656874 + 6656875.

It is an arithmetic number, because the mean of its divisors is an integer number (6656875).

Almost surely, 2^13313749 is an apocalyptic number.

It is an amenable number.

13313749 is a deficient number, since it is larger than the sum of its proper divisors (1).

13313749 is an equidigital number, since it uses as much as digits as its factorization.

13313749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 31.

The square root of 13313749 is about 3648.8010359569. The cubic root of 13313749 is about 237.0100644364.

The spelling of 13313749 in words is "thirteen million, three hundred thirteen thousand, seven hundred forty-nine".