244240643 has 2 divisors, whose sum is σ = 244240644. Its totient is φ = 244240642.

The previous prime is 244240627. The next prime is 244240691. The reversal of 244240643 is 346042442.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 244240643 - 2⁴ = 244240627 is a prime.

It is not a weakly prime, because it can be changed into another prime (244240693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122120321 + 122120322.

It is an arithmetic number, because the mean of its divisors is an integer number (122120322).

Almost surely, 2^244240643 is an apocalyptic number.

244240643 is a deficient number, since it is larger than the sum of its proper divisors (1).

244240643 is an equidigital number, since it uses as much as digits as its factorization.

244240643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 29.

The square root of 244240643 is about 15628.2002482692. The cubic root of 244240643 is about 625.0853370409.

The spelling of 244240643 in words is "two hundred forty-four million, two hundred forty thousand, six hundred forty-three".