220039999 has 4 divisors (see below), whose sum is σ = 225987064. Its totient is φ = 214092936.

The previous prime is 220039979. The next prime is 220040021. The reversal of 220039999 is 999930022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220039999 - 2¹³ = 220031807 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220039979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2973477 + ... + 2973550.

It is an arithmetic number, because the mean of its divisors is an integer number (56496766).

Almost surely, 2^220039999 is an apocalyptic number.

220039999 is a deficient number, since it is larger than the sum of its proper divisors (5947065).

220039999 is an equidigital number, since it uses as much as digits as its factorization.

220039999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947064.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 220039999 is about 14833.7452789240. The cubic root of 220039999 is about 603.7176572798.

The spelling of 220039999 in words is "two hundred twenty million, thirty-nine thousand, nine hundred ninety-nine".