13309715 has 4 divisors (see below), whose sum is σ = 15971664. Its totient is φ = 10647768.

The previous prime is 13309697. The next prime is 13309729. The reversal of 13309715 is 51790331.

13309715 is digitally balanced in base 2, 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, and also an emirpimes, since its reverse is a distinct semiprime: 51790331 = 2879 ⋅17989.

It is a cyclic number.

It is not a de Polignac number, because 13309715 - 2¹⁸ = 13047571 is a prime.

It is a super-3 number, since 3×13309715³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1330967 + ... + 1330976.

It is an arithmetic number, because the mean of its divisors is an integer number (3992916).

Almost surely, 2^13309715 is an apocalyptic number.

13309715 is a deficient number, since it is larger than the sum of its proper divisors (2661949).

13309715 is an equidigital number, since it uses as much as digits as its factorization.

13309715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661948.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 13309715 is about 3648.2482097577. The cubic root of 13309715 is about 236.9861243931.

The spelling of 13309715 in words is "thirteen million, three hundred nine thousand, seven hundred fifteen".