220039979 has 2 divisors, whose sum is σ = 220039980. Its totient is φ = 220039978.

The previous prime is 220039961. The next prime is 220040021. The reversal of 220039979 is 979930022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220039979 - 2¹² = 220035883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220032979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110019989 + 110019990.

It is an arithmetic number, because the mean of its divisors is an integer number (110019990).

Almost surely, 2^220039979 is an apocalyptic number.

220039979 is a deficient number, since it is larger than the sum of its proper divisors (1).

220039979 is an equidigital number, since it uses as much as digits as its factorization.

220039979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 220039979 is about 14833.7446047854. The cubic root of 220039979 is about 603.7176389886.

The spelling of 220039979 in words is "two hundred twenty million, thirty-nine thousand, nine hundred seventy-nine".