33413209 has 2 divisors, whose sum is σ = 33413210. Its totient is φ = 33413208.

The previous prime is 33413203. The next prime is 33413221. The reversal of 33413209 is 90231433.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27667600 + 5745609 = 5260^2 + 2397^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33413209 is a prime.

It is a super-2 number, since 2×33413209² = 2232885071355362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33413203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16706604 + 16706605.

It is an arithmetic number, because the mean of its divisors is an integer number (16706605).

Almost surely, 2^33413209 is an apocalyptic number.

It is an amenable number.

33413209 is a deficient number, since it is larger than the sum of its proper divisors (1).

33413209 is an equidigital number, since it uses as much as digits as its factorization.

33413209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 33413209 is about 5780.4159884908. The cubic root of 33413209 is about 322.0866535043.

The spelling of 33413209 in words is "thirty-three million, four hundred thirteen thousand, two hundred nine".