13491199 has 4 divisors (see below), whose sum is σ = 13855864. Its totient is φ = 13126536.

The previous prime is 13491161. The next prime is 13491211. The reversal of 13491199 is 99119431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99119431 = 31 ⋅3197401.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13491199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 364627 = 13491199 / (1 + 3 + 4 + 9 + 1 + 1 + 9 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13491109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182277 + ... + 182350.

It is an arithmetic number, because the mean of its divisors is an integer number (3463966).

Almost surely, 2^13491199 is an apocalyptic number.

13491199 is a deficient number, since it is larger than the sum of its proper divisors (364665).

13491199 is an equidigital number, since it uses as much as digits as its factorization.

13491199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364664.

The product of its digits is 8748, while the sum is 37.

The square root of 13491199 is about 3673.0367545125. The cubic root of 13491199 is about 238.0584031518.

The spelling of 13491199 in words is "thirteen million, four hundred ninety-one thousand, one hundred ninety-nine".