22440859 has 4 divisors (see below), whose sum is σ = 25646704. Its totient is φ = 19235016.

The previous prime is 22440841. The next prime is 22440967. The reversal of 22440859 is 95804422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22440859 - 2⁹ = 22440347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22440059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1602912 + ... + 1602925.

It is an arithmetic number, because the mean of its divisors is an integer number (6411676).

Almost surely, 2^22440859 is an apocalyptic number.

22440859 is a deficient number, since it is larger than the sum of its proper divisors (3205845).

22440859 is an equidigital number, since it uses as much as digits as its factorization.

22440859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205844.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 22440859 is about 4737.1783795842. The cubic root of 22440859 is about 282.0632413535.

The spelling of 22440859 in words is "twenty-two million, four hundred forty thousand, eight hundred fifty-nine".