13399013 has 4 divisors (see below), whose sum is σ = 13411788. Its totient is φ = 13386240.

The previous prime is 13399007. The next prime is 13399021. The reversal of 13399013 is 31099331.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5373124 + 8025889 = 2318^2 + 2833^2 .

It is a cyclic number.

It is not a de Polignac number, because 13399013 - 2⁴ = 13398997 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 (13399003) 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, 4658 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (3352947).

Almost surely, 2^13399013 is an apocalyptic number.

It is an amenable number.

13399013 is a deficient number, since it is larger than the sum of its proper divisors (12775).

13399013 is a wasteful number, since it uses less digits than its factorization.

13399013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12774.

The product of its (nonzero) digits is 2187, while the sum is 29.

The square root of 13399013 is about 3660.4662271356. The cubic root of 13399013 is about 237.5149419962.

The spelling of 13399013 in words is "thirteen million, three hundred ninety-nine thousand, thirteen".