22306489 has 2 divisors, whose sum is σ = 22306490. Its totient is φ = 22306488.

The previous prime is 22306483. The next prime is 22306517. The reversal of 22306489 is 98460322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21114025 + 1192464 = 4595^2 + 1092^2 .

It is a cyclic number.

It is not a de Polignac number, because 22306489 - 2⁹ = 22305977 is a prime.

It is not a weakly prime, because it can be changed into another prime (22306483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11153244 + 11153245.

It is an arithmetic number, because the mean of its divisors is an integer number (11153245).

Almost surely, 2^22306489 is an apocalyptic number.

It is an amenable number.

22306489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22306489 is an equidigital number, since it uses as much as digits as its factorization.

22306489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 22306489 is about 4722.9745923517. The cubic root of 22306489 is about 281.4991402919.

The spelling of 22306489 in words is "twenty-two million, three hundred six thousand, four hundred eighty-nine".