441040643 has 2 divisors, whose sum is σ = 441040644. Its totient is φ = 441040642.

The previous prime is 441040631. The next prime is 441040679. The reversal of 441040643 is 346040144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 441040643 - 2²⁰ = 439992067 is a prime.

It is not a weakly prime, because it can be changed into another prime (441040693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220520321 + 220520322.

It is an arithmetic number, because the mean of its divisors is an integer number (220520322).

Almost surely, 2^441040643 is an apocalyptic number.

441040643 is a deficient number, since it is larger than the sum of its proper divisors (1).

441040643 is an equidigital number, since it uses as much as digits as its factorization.

441040643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 441040643 is about 21000.9676681814. The cubic root of 441040643 is about 761.1896436644.

Adding to 441040643 its reverse (346040144), we get a palindrome (787080787).

The spelling of 441040643 in words is "four hundred forty-one million, forty thousand, six hundred forty-three".