220457999 has 2 divisors, whose sum is σ = 220458000. Its totient is φ = 220457998.

The previous prime is 220457983. The next prime is 220458047. The reversal of 220457999 is 999754022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220457999 - 2⁴ = 220457983 is a prime.

It is a Sophie Germain 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 (220457959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110228999 + 110229000.

It is an arithmetic number, because the mean of its divisors is an integer number (110229000).

Almost surely, 2^220457999 is an apocalyptic number.

220457999 is a deficient number, since it is larger than the sum of its proper divisors (1).

220457999 is an equidigital number, since it uses as much as digits as its factorization.

220457999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 220457999 is about 14847.8280903302. The cubic root of 220457999 is about 604.0997004768.

The spelling of 220457999 in words is "two hundred twenty million, four hundred fifty-seven thousand, nine hundred ninety-nine".