13159399 has 4 divisors (see below), whose sum is σ = 14355720. Its totient is φ = 11963080.

The previous prime is 13159379. The next prime is 13159409. The reversal of 13159399 is 99395131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99395131 = 11 ⋅9035921.

It is a cyclic number.

It is not a de Polignac number, because 13159399 - 2¹⁹ = 12635111 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 (13159339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598144 + ... + 598165.

It is an arithmetic number, because the mean of its divisors is an integer number (3588930).

Almost surely, 2^13159399 is an apocalyptic number.

13159399 is a deficient number, since it is larger than the sum of its proper divisors (1196321).

13159399 is a wasteful number, since it uses less digits than its factorization.

13159399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196320.

The product of its digits is 32805, while the sum is 40.

The square root of 13159399 is about 3627.5885929912. The cubic root of 13159399 is about 236.0905941091.

The spelling of 13159399 in words is "thirteen million, one hundred fifty-nine thousand, three hundred ninety-nine".