220979859 has 4 divisors (see below), whose sum is σ = 294639816. Its totient is φ = 147319904.

The previous prime is 220979851. The next prime is 220979867. The reversal of 220979859 is 958979022.

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

It is an interprime number because it is at equal distance from previous prime (220979851) and next prime (220979867).

It is a cyclic number.

It is not a de Polignac number, because 220979859 - 2³ = 220979851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220979851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36829974 + ... + 36829979.

It is an arithmetic number, because the mean of its divisors is an integer number (73659954).

Almost surely, 2^220979859 is an apocalyptic number.

220979859 is a deficient number, since it is larger than the sum of its proper divisors (73659957).

220979859 is an equidigital number, since it uses as much as digits as its factorization.

220979859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73659956.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 220979859 is about 14865.3913167464. The cubic root of 220979859 is about 604.5759923238.

The spelling of 220979859 in words is "two hundred twenty million, nine hundred seventy-nine thousand, eight hundred fifty-nine".