440563243 has 2 divisors, whose sum is σ = 440563244. Its totient is φ = 440563242.

The previous prime is 440563199. The next prime is 440563267. The reversal of 440563243 is 342365044.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-440563243 is a prime.

It is not a weakly prime, because it can be changed into another prime (440563283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220281621 + 220281622.

It is an arithmetic number, because the mean of its divisors is an integer number (220281622).

Almost surely, 2^440563243 is an apocalyptic number.

440563243 is a deficient number, since it is larger than the sum of its proper divisors (1).

440563243 is an equidigital number, since it uses as much as digits as its factorization.

440563243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 31.

The square root of 440563243 is about 20989.5984478027. The cubic root of 440563243 is about 760.9148971551.

The spelling of 440563243 in words is "four hundred forty million, five hundred sixty-three thousand, two hundred forty-three".