13633309 has 2 divisors, whose sum is σ = 13633310. Its totient is φ = 13633308.

The previous prime is 13633247. The next prime is 13633313. The reversal of 13633309 is 90333631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13527684 + 105625 = 3678^2 + 325^2 .

It is a cyclic number.

It is not a de Polignac number, because 13633309 - 2¹⁵ = 13600541 is a prime.

It is a super-2 number, since 2×13633309² = 371734228578962, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13633339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6816654 + 6816655.

It is an arithmetic number, because the mean of its divisors is an integer number (6816655).

Almost surely, 2^13633309 is an apocalyptic number.

It is an amenable number.

13633309 is a deficient number, since it is larger than the sum of its proper divisors (1).

13633309 is an equidigital number, since it uses as much as digits as its factorization.

13633309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4374, while the sum is 28.

The square root of 13633309 is about 3692.3311064963. The cubic root of 13633309 is about 238.8913507428.

The spelling of 13633309 in words is "thirteen million, six hundred thirty-three thousand, three hundred nine".