220279589 has 2 divisors, whose sum is σ = 220279590. Its totient is φ = 220279588.

The previous prime is 220279567. The next prime is 220279603. The reversal of 220279589 is 985972022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197402500 + 22877089 = 14050^2 + 4783^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220279589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220279529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110139794 + 110139795.

It is an arithmetic number, because the mean of its divisors is an integer number (110139795).

Almost surely, 2^220279589 is an apocalyptic number.

It is an amenable number.

220279589 is a deficient number, since it is larger than the sum of its proper divisors (1).

220279589 is an equidigital number, since it uses as much as digits as its factorization.

220279589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 220279589 is about 14841.8189249162. The cubic root of 220279589 is about 603.9366966169.

The spelling of 220279589 in words is "two hundred twenty million, two hundred seventy-nine thousand, five hundred eighty-nine".