13392009 has 12 divisors (see below), whose sum is σ = 19453252. Its totient is φ = 8877600.

The previous prime is 13391981. The next prime is 13392011. The reversal of 13392009 is 90029331.

It can be written as a sum of positive squares in 2 ways, for example, as 5774409 + 7617600 = 2403^2 + 2760^2 .

It is not a de Polignac number, because 13392009 - 2⁵ = 13391977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13392059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2482 + ... + 5739.

Almost surely, 2^13392009 is an apocalyptic number.

It is an amenable number.

13392009 is a deficient number, since it is larger than the sum of its proper divisors (6061243).

13392009 is a wasteful number, since it uses less digits than its factorization.

13392009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8408 (or 8405 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 13392009 is about 3659.5093933477. The cubic root of 13392009 is about 237.4735497783.

The spelling of 13392009 in words is "thirteen million, three hundred ninety-two thousand, nine".