22911949 has 2 divisors, whose sum is σ = 22911950. Its totient is φ = 22911948.

The previous prime is 22911919. The next prime is 22911961. The reversal of 22911949 is 94911922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21996100 + 915849 = 4690^2 + 957^2 .

It is a cyclic number.

It is not a de Polignac number, because 22911949 - 2⁹ = 22911437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22911919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11455974 + 11455975.

It is an arithmetic number, because the mean of its divisors is an integer number (11455975).

Almost surely, 2^22911949 is an apocalyptic number.

It is an amenable number.

22911949 is a deficient number, since it is larger than the sum of its proper divisors (1).

22911949 is an equidigital number, since it uses as much as digits as its factorization.

22911949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 37.

The square root of 22911949 is about 4786.6427692068. The cubic root of 22911949 is about 284.0233276150.

The spelling of 22911949 in words is "twenty-two million, nine hundred eleven thousand, nine hundred forty-nine".