222322993 has 8 divisors (see below), whose sum is σ = 223481160. Its totient is φ = 221168640.

The previous prime is 222322981. The next prime is 222323011. The reversal of 222322993 is 399223222.

It can be written as a sum of positive squares in 4 ways, for example, as 5143824 + 217179169 = 2268^2 + 14737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222322993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222322193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251913 + ... + 252793.

It is an arithmetic number, because the mean of its divisors is an integer number (27935145).

Almost surely, 2^222322993 is an apocalyptic number.

It is an amenable number.

222322993 is a deficient number, since it is larger than the sum of its proper divisors (1158167).

222322993 is an equidigital number, since it uses as much as digits as its factorization.

222322993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907.

The product of its digits is 23328, while the sum is 34.

The square root of 222322993 is about 14910.4994215486. The cubic root of 222322993 is about 605.7984067693.

The spelling of 222322993 in words is "two hundred twenty-two million, three hundred twenty-two thousand, nine hundred ninety-three".