222992993 has 2 divisors, whose sum is σ = 222992994. Its totient is φ = 222992992.

The previous prime is 222992947. The next prime is 222993011. The reversal of 222992993 is 399299222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178810384 + 44182609 = 13372^2 + 6647^2 .

It is a cyclic number.

It is not a de Polignac number, because 222992993 - 2¹² = 222988897 is a prime.

It is not a weakly prime, because it can be changed into another prime (222992933) 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, 111496496 + 111496497.

It is an arithmetic number, because the mean of its divisors is an integer number (111496497).

Almost surely, 2^222992993 is an apocalyptic number.

It is an amenable number.

222992993 is a deficient number, since it is larger than the sum of its proper divisors (1).

222992993 is an equidigital number, since it uses as much as digits as its factorization.

222992993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 47.

The square root of 222992993 is about 14932.9499095122. The cubic root of 222992993 is about 606.4063479136.

The spelling of 222992993 in words is "two hundred twenty-two million, nine hundred ninety-two thousand, nine hundred ninety-three".