13892709 has 4 divisors (see below), whose sum is σ = 18523616. Its totient is φ = 9261804.

The previous prime is 13892701. The next prime is 13892729. The reversal of 13892709 is 90729831.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90729831 = 3 ⋅30243277.

It is not a de Polignac number, because 13892709 - 2³ = 13892701 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13892701) 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, 2315449 + ... + 2315454.

It is an arithmetic number, because the mean of its divisors is an integer number (4630904).

Almost surely, 2^13892709 is an apocalyptic number.

It is an amenable number.

13892709 is a deficient number, since it is larger than the sum of its proper divisors (4630907).

13892709 is an equidigital number, since it uses as much as digits as its factorization.

13892709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4630906.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 13892709 is about 3727.2924489500. The cubic root of 13892709 is about 240.3969645788.

The spelling of 13892709 in words is "thirteen million, eight hundred ninety-two thousand, seven hundred nine".