220403189 has 2 divisors, whose sum is σ = 220403190. Its totient is φ = 220403188.

The previous prime is 220403143. The next prime is 220403207. The reversal of 220403189 is 981304022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219336100 + 1067089 = 14810^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 220403189 - 2¹² = 220399093 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220403119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110201594 + 110201595.

It is an arithmetic number, because the mean of its divisors is an integer number (110201595).

Almost surely, 2^220403189 is an apocalyptic number.

It is an amenable number.

220403189 is a deficient number, since it is larger than the sum of its proper divisors (1).

220403189 is an equidigital number, since it uses as much as digits as its factorization.

220403189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 220403189 is about 14845.9822511008. The cubic root of 220403189 is about 604.0496328160.

The spelling of 220403189 in words is "two hundred twenty million, four hundred three thousand, one hundred eighty-nine".