13409793 has 10 divisors (see below), whose sum is σ = 20032034. Its totient is φ = 8939808.

The previous prime is 13409791. The next prime is 13409797. The reversal of 13409793 is 39790431.

It can be written as a sum of positive squares in only one way, i.e., 9199089 + 4210704 = 3033^2 + 2052^2 .

It is not a de Polignac number, because 13409793 - 2¹ = 13409791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13409791) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 82696 + ... + 82857.

Almost surely, 2^13409793 is an apocalyptic number.

It is an amenable number.

13409793 is a deficient number, since it is larger than the sum of its proper divisors (6622241).

13409793 is an equidigital number, since it uses as much as digits as its factorization.

13409793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165565 (or 165556 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 13409793 is about 3661.9384211098. The cubic root of 13409793 is about 237.5786214312.

The spelling of 13409793 in words is "thirteen million, four hundred nine thousand, seven hundred ninety-three".