13033409 has 2 divisors, whose sum is σ = 13033410. Its totient is φ = 13033408.

The previous prime is 13033393. The next prime is 13033417. The reversal of 13033409 is 90433031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12623809 + 409600 = 3553^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 13033409 - 2⁴ = 13033393 is a prime.

It is a super-2 number, since 2×13033409² = 339739500322562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13033439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6516704 + 6516705.

It is an arithmetic number, because the mean of its divisors is an integer number (6516705).

Almost surely, 2^13033409 is an apocalyptic number.

It is an amenable number.

13033409 is a deficient number, since it is larger than the sum of its proper divisors (1).

13033409 is an equidigital number, since it uses as much as digits as its factorization.

13033409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 13033409 is about 3610.1812973866. The cubic root of 13033409 is about 235.3347214450.

The spelling of 13033409 in words is "thirteen million, thirty-three thousand, four hundred nine".