22921793 has 2 divisors, whose sum is σ = 22921794. Its totient is φ = 22921792.

The previous prime is 22921783. The next prime is 22921799. The reversal of 22921793 is 39712922.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18731584 + 4190209 = 4328^2 + 2047^2 .

It is a cyclic number.

It is not a de Polignac number, because 22921793 - 2¹⁶ = 22856257 is a prime.

It is not a weakly prime, because it can be changed into another prime (22921799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11460896 + 11460897.

It is an arithmetic number, because the mean of its divisors is an integer number (11460897).

Almost surely, 2^22921793 is an apocalyptic number.

It is an amenable number.

22921793 is a deficient number, since it is larger than the sum of its proper divisors (1).

22921793 is an equidigital number, since it uses as much as digits as its factorization.

22921793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 22921793 is about 4787.6709368961. The cubic root of 22921793 is about 284.0639981739.

It can be divided in two parts, 229 and 21793, that added together give a palindrome (22022).

The spelling of 22921793 in words is "twenty-two million, nine hundred twenty-one thousand, seven hundred ninety-three".