22440499 has 2 divisors, whose sum is σ = 22440500. Its totient is φ = 22440498.

The previous prime is 22440491. The next prime is 22440521. The reversal of 22440499 is 99404422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22440499 - 2³ = 22440491 is a prime.

It is not a weakly prime, because it can be changed into another prime (22440491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11220249 + 11220250.

It is an arithmetic number, because the mean of its divisors is an integer number (11220250).

Almost surely, 2^22440499 is an apocalyptic number.

22440499 is a deficient number, since it is larger than the sum of its proper divisors (1).

22440499 is an equidigital number, since it uses as much as digits as its factorization.

22440499 is an odious number, because the sum of its binary digits is odd.

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

The square root of 22440499 is about 4737.1403821293. The cubic root of 22440499 is about 282.0617330436.

The spelling of 22440499 in words is "twenty-two million, four hundred forty thousand, four hundred ninety-nine".