22793993 has 2 divisors, whose sum is σ = 22793994. Its totient is φ = 22793992.

The previous prime is 22793963. The next prime is 22794007. The reversal of 22793993 is 39939722.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21557449 + 1236544 = 4643^2 + 1112^2 .

It is a cyclic number.

It is not a de Polignac number, because 22793993 - 2⁸ = 22793737 is a prime.

It is a super-2 number, since 2×22793993² = 1039132233768098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22793963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11396996 + 11396997.

It is an arithmetic number, because the mean of its divisors is an integer number (11396997).

Almost surely, 2^22793993 is an apocalyptic number.

It is an amenable number.

22793993 is a deficient number, since it is larger than the sum of its proper divisors (1).

22793993 is an equidigital number, since it uses as much as digits as its factorization.

22793993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 44.

The square root of 22793993 is about 4774.3054992323. The cubic root of 22793993 is about 283.5350829138.

The spelling of 22793993 in words is "twenty-two million, seven hundred ninety-three thousand, nine hundred ninety-three".