13257399 has 8 divisors (see below), whose sum is σ = 18716400. Its totient is φ = 8318336.

The previous prime is 13257397. The next prime is 13257401. The reversal of 13257399 is 99375231.

It is an interprime number because it is at equal distance from previous prime (13257397) and next prime (13257401).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13257399 - 2¹ = 13257397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13257397) 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 7 ways as a sum of consecutive naturals, for example, 129924 + ... + 130025.

It is an arithmetic number, because the mean of its divisors is an integer number (2339550).

Almost surely, 2^13257399 is an apocalyptic number.

13257399 is a deficient number, since it is larger than the sum of its proper divisors (5459001).

13257399 is a wasteful number, since it uses less digits than its factorization.

13257399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259969.

The product of its digits is 51030, while the sum is 39.

The square root of 13257399 is about 3641.0711336089. The cubic root of 13257399 is about 236.6752125019.

The spelling of 13257399 in words is "thirteen million, two hundred fifty-seven thousand, three hundred ninety-nine".