220558979 has 2 divisors, whose sum is σ = 220558980. Its totient is φ = 220558978.

The previous prime is 220558957. The next prime is 220558991. The reversal of 220558979 is 979855022.

220558979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220558979 - 2¹² = 220554883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220558909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110279489 + 110279490.

It is an arithmetic number, because the mean of its divisors is an integer number (110279490).

Almost surely, 2^220558979 is an apocalyptic number.

220558979 is a deficient number, since it is larger than the sum of its proper divisors (1).

220558979 is an equidigital number, since it uses as much as digits as its factorization.

220558979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The square root of 220558979 is about 14851.2281983680. The cubic root of 220558979 is about 604.1919216353.

The spelling of 220558979 in words is "two hundred twenty million, five hundred fifty-eight thousand, nine hundred seventy-nine".