22244993 has 4 divisors (see below), whose sum is σ = 23553540. Its totient is φ = 20936448.

The previous prime is 22244941. The next prime is 22245017. The reversal of 22244993 is 39944222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39944222 = 2 ⋅19972111.

It can be written as a sum of positive squares in 2 ways, for example, as 15547249 + 6697744 = 3943^2 + 2588^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22244993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22244903) 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, 654248 + ... + 654281.

It is an arithmetic number, because the mean of its divisors is an integer number (5888385).

Almost surely, 2^22244993 is an apocalyptic number.

It is an amenable number.

22244993 is a deficient number, since it is larger than the sum of its proper divisors (1308547).

22244993 is a wasteful number, since it uses less digits than its factorization.

22244993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308546.

The product of its digits is 31104, while the sum is 35.

The square root of 22244993 is about 4716.4597952278. The cubic root of 22244993 is about 281.2402170754.

The spelling of 22244993 in words is "twenty-two million, two hundred forty-four thousand, nine hundred ninety-three".