220599989 has 2 divisors, whose sum is σ = 220599990. Its totient is φ = 220599988.

The previous prime is 220599961. The next prime is 220600001. The reversal of 220599989 is 989995022.

220599989 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 can be written as a sum of positive squares in only one way, i.e., 215943025 + 4656964 = 14695^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 220599989 - 2⁸ = 220599733 is a prime.

It is a super-3 number, since 3×220599989³ (a number of 26 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220599989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220599919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110299994 + 110299995.

It is an arithmetic number, because the mean of its divisors is an integer number (110299995).

Almost surely, 2^220599989 is an apocalyptic number.

It is an amenable number.

220599989 is a deficient number, since it is larger than the sum of its proper divisors (1).

220599989 is an equidigital number, since it uses as much as digits as its factorization.

220599989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1049760, while the sum is 53.

The square root of 220599989 is about 14852.6088280813. The cubic root of 220599989 is about 604.2293664573.

The spelling of 220599989 in words is "two hundred twenty million, five hundred ninety-nine thousand, nine hundred eighty-nine".