220893979 has 2 divisors, whose sum is σ = 220893980. Its totient is φ = 220893978.

The previous prime is 220893949. The next prime is 220893991. The reversal of 220893979 is 979398022.

220893979 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 220893979 - 2¹⁵ = 220861211 is a prime.

It is not a weakly prime, because it can be changed into another prime (220893919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110446989 + 110446990.

It is an arithmetic number, because the mean of its divisors is an integer number (110446990).

Almost surely, 2^220893979 is an apocalyptic number.

220893979 is a deficient number, since it is larger than the sum of its proper divisors (1).

220893979 is an equidigital number, since it uses as much as digits as its factorization.

220893979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 220893979 is about 14862.5024474346. The cubic root of 220893979 is about 604.4976628417.

The spelling of 220893979 in words is "two hundred twenty million, eight hundred ninety-three thousand, nine hundred seventy-nine".