222890399 has 2 divisors, whose sum is σ = 222890400. Its totient is φ = 222890398.

The previous prime is 222890329. The next prime is 222890407. The reversal of 222890399 is 993098222.

222890399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222890399 - 2¹⁶ = 222824863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222890329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111445199 + 111445200.

It is an arithmetic number, because the mean of its divisors is an integer number (111445200).

Almost surely, 2^222890399 is an apocalyptic number.

222890399 is a deficient number, since it is larger than the sum of its proper divisors (1).

222890399 is an equidigital number, since it uses as much as digits as its factorization.

222890399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 222890399 is about 14929.5143591478. The cubic root of 222890399 is about 606.3133357290.

The spelling of 222890399 in words is "two hundred twenty-two million, eight hundred ninety thousand, three hundred ninety-nine".