22933409 has 2 divisors, whose sum is σ = 22933410. Its totient is φ = 22933408.

The previous prime is 22933381. The next prime is 22933411. The reversal of 22933409 is 90433922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12390400 + 10543009 = 3520^2 + 3247^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22933409 is a prime.

It is a super-2 number, since 2×22933409² = 1051882496722562, which contains 22 as substring.

Together with 22933411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22933429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11466704 + 11466705.

It is an arithmetic number, because the mean of its divisors is an integer number (11466705).

Almost surely, 2^22933409 is an apocalyptic number.

It is an amenable number.

22933409 is a deficient number, since it is larger than the sum of its proper divisors (1).

22933409 is an equidigital number, since it uses as much as digits as its factorization.

22933409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 22933409 is about 4788.8838991982. The cubic root of 22933409 is about 284.1119747897. Note that the first 3 decimals are identical.

The spelling of 22933409 in words is "twenty-two million, nine hundred thirty-three thousand, four hundred nine".