220468889 has 2 divisors, whose sum is σ = 220468890. Its totient is φ = 220468888.

The previous prime is 220468867. The next prime is 220468901. The reversal of 220468889 is 988864022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220374025 + 94864 = 14845^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 220468889 - 2¹⁶ = 220403353 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220468289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110234444 + 110234445.

It is an arithmetic number, because the mean of its divisors is an integer number (110234445).

Almost surely, 2^220468889 is an apocalyptic number.

It is an amenable number.

220468889 is a deficient number, since it is larger than the sum of its proper divisors (1).

220468889 is an equidigital number, since it uses as much as digits as its factorization.

220468889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 47.

The square root of 220468889 is about 14848.1948061035. The cubic root of 220468889 is about 604.1096472504.

The spelling of 220468889 in words is "two hundred twenty million, four hundred sixty-eight thousand, eight hundred eighty-nine".