222190889 has 2 divisors, whose sum is σ = 222190890. Its totient is φ = 222190888.

The previous prime is 222190877. The next prime is 222190907. The reversal of 222190889 is 988091222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210685225 + 11505664 = 14515^2 + 3392^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222190889 is a prime.

It is a super-2 number, since 2×222190889² = 98737582309220642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (222130889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111095444 + 111095445.

It is an arithmetic number, because the mean of its divisors is an integer number (111095445).

Almost surely, 2^222190889 is an apocalyptic number.

It is an amenable number.

222190889 is a deficient number, since it is larger than the sum of its proper divisors (1).

222190889 is an equidigital number, since it uses as much as digits as its factorization.

222190889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 222190889 is about 14906.0688647275. The cubic root of 222190889 is about 605.6783948176.

The spelling of 222190889 in words is "two hundred twenty-two million, one hundred ninety thousand, eight hundred eighty-nine".