22149973 has 2 divisors, whose sum is σ = 22149974. Its totient is φ = 22149972.

The previous prime is 22149949. The next prime is 22149977. The reversal of 22149973 is 37994122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16499844 + 5650129 = 4062^2 + 2377^2 .

It is a cyclic number.

It is not a de Polignac number, because 22149973 - 2⁹ = 22149461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22149977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11074986 + 11074987.

It is an arithmetic number, because the mean of its divisors is an integer number (11074987).

Almost surely, 2^22149973 is an apocalyptic number.

It is an amenable number.

22149973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22149973 is an equidigital number, since it uses as much as digits as its factorization.

22149973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 37.

The square root of 22149973 is about 4706.3757818517. The cubic root of 22149973 is about 280.8392041985.

The spelling of 22149973 in words is "twenty-two million, one hundred forty-nine thousand, nine hundred seventy-three".