33390609 has 12 divisors (see below), whose sum is σ = 51789744. Its totient is φ = 19080264.

The previous prime is 33390569. The next prime is 33390631. The reversal of 33390609 is 90609333.

It is not a de Polignac number, because 33390609 - 2²³ = 25002001 is a prime.

It is a super-2 number, since 2×33390609² = 2229865538781762, which contains 22 as substring.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 33390609.

It is not an unprimeable number, because it can be changed into a prime (33390659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113427 + ... + 113720.

It is an arithmetic number, because the mean of its divisors is an integer number (4315812).

Almost surely, 2^33390609 is an apocalyptic number.

It is an amenable number.

33390609 is a deficient number, since it is larger than the sum of its proper divisors (18399135).

33390609 is a wasteful number, since it uses less digits than its factorization.

33390609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227164 (or 227157 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 33.

The square root of 33390609 is about 5778.4607812116. The cubic root of 33390609 is about 322.0140195534.

The spelling of 33390609 in words is "thirty-three million, three hundred ninety thousand, six hundred nine".