220779193 has 2 divisors, whose sum is σ = 220779194. Its totient is φ = 220779192.

The previous prime is 220779149. The next prime is 220779197. The reversal of 220779193 is 391977022.

220779193 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 can be written as a sum of positive squares in only one way, i.e., 171400464 + 49378729 = 13092^2 + 7027^2 .

It is a cyclic number.

It is not a de Polignac number, because 220779193 - 2⁹ = 220778681 is a prime.

It is not a weakly prime, because it can be changed into another prime (220779197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110389596 + 110389597.

It is an arithmetic number, because the mean of its divisors is an integer number (110389597).

Almost surely, 2^220779193 is an apocalyptic number.

It is an amenable number.

220779193 is a deficient number, since it is larger than the sum of its proper divisors (1).

220779193 is an equidigital number, since it uses as much as digits as its factorization.

220779193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 220779193 is about 14858.6403482957. The cubic root of 220779193 is about 604.3929370490.

The spelling of 220779193 in words is "two hundred twenty million, seven hundred seventy-nine thousand, one hundred ninety-three".