440202643 has 2 divisors, whose sum is σ = 440202644. Its totient is φ = 440202642.

The previous prime is 440202619. The next prime is 440202671. The reversal of 440202643 is 346202044.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 440202643 - 2²¹ = 438105491 is a prime.

It is not a weakly prime, because it can be changed into another prime (440202673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 220101321 + 220101322.

It is an arithmetic number, because the mean of its divisors is an integer number (220101322).

Almost surely, 2^440202643 is an apocalyptic number.

440202643 is a deficient number, since it is larger than the sum of its proper divisors (1).

440202643 is an equidigital number, since it uses as much as digits as its factorization.

440202643 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 25.

The square root of 440202643 is about 20981.0067203650. The cubic root of 440202643 is about 760.7072381248.

Adding to 440202643 its reverse (346202044), we get a palindrome (786404687).

The spelling of 440202643 in words is "four hundred forty million, two hundred two thousand, six hundred forty-three".