22444997 has 4 divisors (see below), whose sum is σ = 22456896. Its totient is φ = 22433100.

The previous prime is 22444993. The next prime is 22445021. The reversal of 22444997 is 79944422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22444997 - 2² = 22444993 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444993) 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, 2423 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (5614224).

Almost surely, 2^22444997 is an apocalyptic number.

It is an amenable number.

22444997 is a deficient number, since it is larger than the sum of its proper divisors (11899).

22444997 is an equidigital number, since it uses as much as digits as its factorization.

22444997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898.

The product of its digits is 145152, while the sum is 41.

The square root of 22444997 is about 4737.6151173349. The cubic root of 22444997 is about 282.0805773797.

The spelling of 22444997 in words is "twenty-two million, four hundred forty-four thousand, nine hundred ninety-seven".