22420493 has 2 divisors, whose sum is σ = 22420494. Its totient is φ = 22420492.

The previous prime is 22420441. The next prime is 22420507. The reversal of 22420493 is 39402422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15382084 + 7038409 = 3922^2 + 2653^2 .

It is a cyclic number.

It is not a de Polignac number, because 22420493 - 2⁶ = 22420429 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22420403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11210246 + 11210247.

It is an arithmetic number, because the mean of its divisors is an integer number (11210247).

Almost surely, 2^22420493 is an apocalyptic number.

It is an amenable number.

22420493 is a deficient number, since it is larger than the sum of its proper divisors (1).

22420493 is an equidigital number, since it uses as much as digits as its factorization.

22420493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 22420493 is about 4735.0282998098. The cubic root of 22420493 is about 281.9778875407.

The spelling of 22420493 in words is "twenty-two million, four hundred twenty thousand, four hundred ninety-three".