220193879 has 2 divisors, whose sum is σ = 220193880. Its totient is φ = 220193878.

The previous prime is 220193863. The next prime is 220193887. The reversal of 220193879 is 978391022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220193879 - 2⁴ = 220193863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220193819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110096939 + 110096940.

It is an arithmetic number, because the mean of its divisors is an integer number (110096940).

Almost surely, 2^220193879 is an apocalyptic number.

220193879 is a deficient number, since it is larger than the sum of its proper divisors (1).

220193879 is an equidigital number, since it uses as much as digits as its factorization.

220193879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 220193879 is about 14838.9311946649. The cubic root of 220193879 is about 603.8583565861.

The spelling of 220193879 in words is "two hundred twenty million, one hundred ninety-three thousand, eight hundred seventy-nine".