13916309 has 4 divisors (see below), whose sum is σ = 15181440. Its totient is φ = 12651180.

The previous prime is 13916297. The next prime is 13916321. The reversal of 13916309 is 90361931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (13916297) and next prime (13916321).

It is a cyclic number.

It is not a de Polignac number, because 13916309 - 2⁸ = 13916053 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 (13916339) 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, 632549 + ... + 632570.

It is an arithmetic number, because the mean of its divisors is an integer number (3795360).

Almost surely, 2^13916309 is an apocalyptic number.

It is an amenable number.

13916309 is a deficient number, since it is larger than the sum of its proper divisors (1265131).

13916309 is a wasteful number, since it uses less digits than its factorization.

13916309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1265130.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 13916309 is about 3730.4569425206. The cubic root of 13916309 is about 240.5330109726.

The spelling of 13916309 in words is "thirteen million, nine hundred sixteen thousand, three hundred nine".