222890329 has 2 divisors, whose sum is σ = 222890330. Its totient is φ = 222890328.

The previous prime is 222890321. The next prime is 222890399. The reversal of 222890329 is 923098222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 221563225 + 1327104 = 14885^2 + 1152^2 .

It is a cyclic number.

It is not a de Polignac number, because 222890329 - 2³ = 222890321 is a prime.

It is not a weakly prime, because it can be changed into another prime (222890321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111445164 + 111445165.

It is an arithmetic number, because the mean of its divisors is an integer number (111445165).

Almost surely, 2^222890329 is an apocalyptic number.

It is an amenable number.

222890329 is a deficient number, since it is larger than the sum of its proper divisors (1).

222890329 is an equidigital number, since it uses as much as digits as its factorization.

222890329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 222890329 is about 14929.5120147981. The cubic root of 222890329 is about 606.3132722569.

The spelling of 222890329 in words is "two hundred twenty-two million, eight hundred ninety thousand, three hundred twenty-nine".