22894309 has 2 divisors, whose sum is σ = 22894310. Its totient is φ = 22894308.

The previous prime is 22894307. The next prime is 22894343. The reversal of 22894309 is 90349822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22829284 + 65025 = 4778^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 22894309 - 2¹ = 22894307 is a prime.

Together with 22894307, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22894307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11447154 + 11447155.

It is an arithmetic number, because the mean of its divisors is an integer number (11447155).

Almost surely, 2^22894309 is an apocalyptic number.

It is an amenable number.

22894309 is a deficient number, since it is larger than the sum of its proper divisors (1).

22894309 is an equidigital number, since it uses as much as digits as its factorization.

22894309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 22894309 is about 4784.7997868249. The cubic root of 22894309 is about 283.9504186737.

The spelling of 22894309 in words is "twenty-two million, eight hundred ninety-four thousand, three hundred nine".