22909637 has 2 divisors, whose sum is σ = 22909638. Its totient is φ = 22909636.

The previous prime is 22909631. The next prime is 22909639. The reversal of 22909637 is 73690922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17522596 + 5387041 = 4186^2 + 2321^2 .

It is a cyclic number.

It is not a de Polignac number, because 22909637 - 2¹⁴ = 22893253 is a prime.

Together with 22909639, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22909637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22909631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11454818 + 11454819.

It is an arithmetic number, because the mean of its divisors is an integer number (11454819).

Almost surely, 2^22909637 is an apocalyptic number.

It is an amenable number.

22909637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22909637 is an equidigital number, since it uses as much as digits as its factorization.

22909637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 22909637 is about 4786.4012577301. The cubic root of 22909637 is about 284.0137738807.

The spelling of 22909637 in words is "twenty-two million, nine hundred nine thousand, six hundred thirty-seven".