13140399 has 4 divisors (see below), whose sum is σ = 17520536. Its totient is φ = 8760264.

The previous prime is 13140389. The next prime is 13140409. The reversal of 13140399 is 99304131.

13140399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (13140389) and next prime (13140409).

It is not a de Polignac number, because 13140399 - 2⁵ = 13140367 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 (13140329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190064 + ... + 2190069.

It is an arithmetic number, because the mean of its divisors is an integer number (4380134).

Almost surely, 2^13140399 is an apocalyptic number.

13140399 is a deficient number, since it is larger than the sum of its proper divisors (4380137).

13140399 is an equidigital number, since it uses as much as digits as its factorization.

13140399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4380136.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 13140399 is about 3624.9688274522. The cubic root of 13140399 is about 235.9769140972.

The spelling of 13140399 in words is "thirteen million, one hundred forty thousand, three hundred ninety-nine".