13099399 has 4 divisors (see below), whose sum is σ = 13172760. Its totient is φ = 13026040.

The previous prime is 13099393. The next prime is 13099403. The reversal of 13099399 is 99399031.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13099399 is a prime.

It is a super-2 number, since 2×13099399² = 343188508322402, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13099393) 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 3 ways as a sum of consecutive naturals, for example, 36412 + ... + 36769.

It is an arithmetic number, because the mean of its divisors is an integer number (3293190).

Almost surely, 2^13099399 is an apocalyptic number.

13099399 is a deficient number, since it is larger than the sum of its proper divisors (73361).

13099399 is an equidigital number, since it uses as much as digits as its factorization.

13099399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73360.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 13099399 is about 3619.3091882292. The cubic root of 13099399 is about 235.7312307028.

The spelling of 13099399 in words is "thirteen million, ninety-nine thousand, three hundred ninety-nine".