220899 has 16 divisors (see below), whose sum is σ = 343808. Its totient is φ = 123552.

The previous prime is 220897. The next prime is 220901. The reversal of 220899 is 998022.

It is a Cunningham number, because it is equal to 470²-1.

It is an interprime number because it is at equal distance from previous prime (220897) and next prime (220901).

It is not a de Polignac number, because 220899 - 2¹ = 220897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1329 + ... + 1485.

It is an arithmetic number, because the mean of its divisors is an integer number (21488).

2²²⁰⁸⁹⁹ is an apocalyptic number.

220899 is a deficient number, since it is larger than the sum of its proper divisors (122909).

220899 is a wasteful number, since it uses less digits than its factorization.

220899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 220899 is about 469.9989361690. The cubic root of 220899 is about 60.4502242957.

The spelling of 220899 in words is "two hundred twenty thousand, eight hundred ninety-nine".