220243379 has 2 divisors, whose sum is σ = 220243380. Its totient is φ = 220243378.

The previous prime is 220243339. The next prime is 220243391. The reversal of 220243379 is 973342022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220243379 - 2¹⁶ = 220177843 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (220243319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110121689 + 110121690.

It is an arithmetic number, because the mean of its divisors is an integer number (110121690).

Almost surely, 2^220243379 is an apocalyptic number.

220243379 is a deficient number, since it is larger than the sum of its proper divisors (1).

220243379 is an equidigital number, since it uses as much as digits as its factorization.

220243379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 220243379 is about 14840.5990108216. The cubic root of 220243379 is about 603.9036026956.

The spelling of 220243379 in words is "two hundred twenty million, two hundred forty-three thousand, three hundred seventy-nine".