22289977 has 2 divisors, whose sum is σ = 22289978. Its totient is φ = 22289976.

The previous prime is 22289963. The next prime is 22289987. The reversal of 22289977 is 77998222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 583696 = 4659^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 22289977 - 2¹¹ = 22287929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22289957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11144988 + 11144989.

It is an arithmetic number, because the mean of its divisors is an integer number (11144989).

Almost surely, 2^22289977 is an apocalyptic number.

It is an amenable number.

22289977 is a deficient number, since it is larger than the sum of its proper divisors (1).

22289977 is an equidigital number, since it uses as much as digits as its factorization.

22289977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 46.

The square root of 22289977 is about 4721.2262178379. The cubic root of 22289977 is about 281.4296648256.

The spelling of 22289977 in words is "twenty-two million, two hundred eighty-nine thousand, nine hundred seventy-seven".