13369509 has 16 divisors (see below), whose sum is σ = 20668800. Its totient is φ = 8525088.

The previous prime is 13369501. The next prime is 13369523. The reversal of 13369509 is 90596331.

It is not a de Polignac number, because 13369509 - 2³ = 13369501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13369501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10144 + ... + 11385.

It is an arithmetic number, because the mean of its divisors is an integer number (1291800).

Almost surely, 2^13369509 is an apocalyptic number.

It is an amenable number.

13369509 is a deficient number, since it is larger than the sum of its proper divisors (7299291).

13369509 is a wasteful number, since it uses less digits than its factorization.

13369509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21561 (or 21555 counting only the distinct ones).

The product of its (nonzero) digits is 21870, while the sum is 36.

The square root of 13369509 is about 3656.4339184511. The cubic root of 13369509 is about 237.3404816174.

The spelling of 13369509 in words is "thirteen million, three hundred sixty-nine thousand, five hundred nine".