33090385 has 4 divisors (see below), whose sum is σ = 39708468. Its totient is φ = 26472304.

The previous prime is 33090383. The next prime is 33090413. The reversal of 33090385 is 58309033.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58309033 = 1319 ⋅44207.

It can be written as a sum of positive squares in 2 ways, for example, as 12623809 + 20466576 = 3553^2 + 4524^2 .

It is a cyclic number.

It is not a de Polignac number, because 33090385 - 2¹ = 33090383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33090383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3309034 + ... + 3309043.

It is an arithmetic number, because the mean of its divisors is an integer number (9927117).

Almost surely, 2^33090385 is an apocalyptic number.

It is an amenable number.

33090385 is a deficient number, since it is larger than the sum of its proper divisors (6618083).

33090385 is an equidigital number, since it uses as much as digits as its factorization.

33090385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6618082.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 33090385 is about 5752.4242715572. The cubic root of 33090385 is about 321.0460074518.

The spelling of 33090385 in words is "thirty-three million, ninety thousand, three hundred eighty-five".