220344239 has 2 divisors, whose sum is σ = 220344240. Its totient is φ = 220344238.

The previous prime is 220344217. The next prime is 220344253. The reversal of 220344239 is 932443022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220344239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220044239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110172119 + 110172120.

It is an arithmetic number, because the mean of its divisors is an integer number (110172120).

Almost surely, 2^220344239 is an apocalyptic number.

220344239 is a deficient number, since it is larger than the sum of its proper divisors (1).

220344239 is an equidigital number, since it uses as much as digits as its factorization.

220344239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 220344239 is about 14843.9967326862. The cubic root of 220344239 is about 603.9957740958.

The spelling of 220344239 in words is "two hundred twenty million, three hundred forty-four thousand, two hundred thirty-nine".