22464889 has 2 divisors, whose sum is σ = 22464890. Its totient is φ = 22464888.

The previous prime is 22464887. The next prime is 22464907. The reversal of 22464889 is 98846422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12960000 + 9504889 = 3600^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 22464889 - 2¹ = 22464887 is a prime.

Together with 22464887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22464887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11232444 + 11232445.

It is an arithmetic number, because the mean of its divisors is an integer number (11232445).

Almost surely, 2^22464889 is an apocalyptic number.

It is an amenable number.

22464889 is a deficient number, since it is larger than the sum of its proper divisors (1).

22464889 is an equidigital number, since it uses as much as digits as its factorization.

22464889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 43.

The square root of 22464889 is about 4739.7140209089. The cubic root of 22464889 is about 282.1638845866.

The spelling of 22464889 in words is "twenty-two million, four hundred sixty-four thousand, eight hundred eighty-nine".