22933909 has 4 divisors (see below), whose sum is σ = 23023404. Its totient is φ = 22844416.

The previous prime is 22933907. The next prime is 22933919. The reversal of 22933909 is 90933922.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90933922 = 2 ⋅45466961.

It can be written as a sum of positive squares in 2 ways, for example, as 18190225 + 4743684 = 4265^2 + 2178^2 .

It is a cyclic number.

It is not a de Polignac number, because 22933909 - 2¹ = 22933907 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22933907) 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, 44362 + ... + 44875.

It is an arithmetic number, because the mean of its divisors is an integer number (5755851).

Almost surely, 2^22933909 is an apocalyptic number.

It is an amenable number.

22933909 is a deficient number, since it is larger than the sum of its proper divisors (89495).

22933909 is an equidigital number, since it uses as much as digits as its factorization.

22933909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89494.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 22933909 is about 4788.9361031444. The cubic root of 22933909 is about 284.1140395352.

The spelling of 22933909 in words is "twenty-two million, nine hundred thirty-three thousand, nine hundred nine".