22790993 has 2 divisors, whose sum is σ = 22790994. Its totient is φ = 22790992.

The previous prime is 22790981. The next prime is 22791011. The reversal of 22790993 is 39909722.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13162384 + 9628609 = 3628^2 + 3103^2 .

It is a cyclic number.

It is not a de Polignac number, because 22790993 - 2⁸ = 22790737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22790993.

It is not a weakly prime, because it can be changed into another prime (22790093) 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, 11395496 + 11395497.

It is an arithmetic number, because the mean of its divisors is an integer number (11395497).

Almost surely, 2^22790993 is an apocalyptic number.

It is an amenable number.

22790993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22790993 is an equidigital number, since it uses as much as digits as its factorization.

22790993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 22790993 is about 4773.9913070721. The cubic root of 22790993 is about 283.5226433415.

The spelling of 22790993 in words is "twenty-two million, seven hundred ninety thousand, nine hundred ninety-three".