22444391 has 2 divisors, whose sum is σ = 22444392. Its totient is φ = 22444390.

The previous prime is 22444381. The next prime is 22444393. The reversal of 22444391 is 19344422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22444391 - 2⁶ = 22444327 is a prime.

Together with 22444393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22444393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11222195 + 11222196.

It is an arithmetic number, because the mean of its divisors is an integer number (11222196).

Almost surely, 2^22444391 is an apocalyptic number.

22444391 is a deficient number, since it is larger than the sum of its proper divisors (1).

22444391 is an equidigital number, since it uses as much as digits as its factorization.

22444391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 29.

The square root of 22444391 is about 4737.5511606736. The cubic root of 22444391 is about 282.0780386942.

The spelling of 22444391 in words is "twenty-two million, four hundred forty-four thousand, three hundred ninety-one".