220854391 has 2 divisors, whose sum is σ = 220854392. Its totient is φ = 220854390.

The previous prime is 220854373. The next prime is 220854427. The reversal of 220854391 is 193458022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220854391 - 2¹⁷ = 220723319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220854371) 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, 110427195 + 110427196.

It is an arithmetic number, because the mean of its divisors is an integer number (110427196).

Almost surely, 2^220854391 is an apocalyptic number.

220854391 is a deficient number, since it is larger than the sum of its proper divisors (1).

220854391 is an equidigital number, since it uses as much as digits as its factorization.

220854391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 220854391 is about 14861.1705797356. The cubic root of 220854391 is about 604.4615485584.

The spelling of 220854391 in words is "two hundred twenty million, eight hundred fifty-four thousand, three hundred ninety-one".