220440347 has 2 divisors, whose sum is σ = 220440348. Its totient is φ = 220440346.

The previous prime is 220440331. The next prime is 220440379. The reversal of 220440347 is 743044022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220440347 - 2⁴ = 220440331 is a prime.

It is not a weakly prime, because it can be changed into another prime (220440047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110220173 + 110220174.

It is an arithmetic number, because the mean of its divisors is an integer number (110220174).

Almost surely, 2^220440347 is an apocalyptic number.

220440347 is a deficient number, since it is larger than the sum of its proper divisors (1).

220440347 is an equidigital number, since it uses as much as digits as its factorization.

220440347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 220440347 is about 14847.2336480571. The cubic root of 220440347 is about 604.0835766912.

Adding to 220440347 its reverse (743044022), we get a palindrome (963484369).

The spelling of 220440347 in words is "two hundred twenty million, four hundred forty thousand, three hundred forty-seven".