220299917 has 2 divisors, whose sum is σ = 220299918. Its totient is φ = 220299916.

The previous prime is 220299907. The next prime is 220299931. The reversal of 220299917 is 719992022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199769956 + 20529961 = 14134^2 + 4531^2 .

It is a cyclic number.

It is not a de Polignac number, because 220299917 - 2¹⁰ = 220298893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220299907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110149958 + 110149959.

It is an arithmetic number, because the mean of its divisors is an integer number (110149959).

Almost surely, 2^220299917 is an apocalyptic number.

It is an amenable number.

220299917 is a deficient number, since it is larger than the sum of its proper divisors (1).

220299917 is an equidigital number, since it uses as much as digits as its factorization.

220299917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 220299917 is about 14842.5037308400. The cubic root of 220299917 is about 603.9552736862.

The spelling of 220299917 in words is "two hundred twenty million, two hundred ninety-nine thousand, nine hundred seventeen".