13353309 has 8 divisors (see below), whose sum is σ = 19782720. Its totient is φ = 8902188.

The previous prime is 13353283. The next prime is 13353359. The reversal of 13353309 is 90335331.

13353309 is a `hidden beast` number, since 1 + 3 + 353 + 309 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-13353309 is a prime.

It is a super-2 number, since 2×13353309² = 356621722498962, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 494567 = 13353309 / (1 + 3 + 3 + 5 + 3 + 3 + 0 + 9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13353359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247257 + ... + 247310.

It is an arithmetic number, because the mean of its divisors is an integer number (2472840).

Almost surely, 2^13353309 is an apocalyptic number.

It is an amenable number.

13353309 is a deficient number, since it is larger than the sum of its proper divisors (6429411).

13353309 is an equidigital number, since it uses as much as digits as its factorization.

13353309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494576 (or 494570 counting only the distinct ones).

The product of its (nonzero) digits is 3645, while the sum is 27.

The square root of 13353309 is about 3654.2179737941. The cubic root of 13353309 is about 237.2445800695.

The spelling of 13353309 in words is "thirteen million, three hundred fifty-three thousand, three hundred nine".