6408440743 has 2 divisors, whose sum is σ = 6408440744. Its totient is φ = 6408440742.

The previous prime is 6408440729. The next prime is 6408440747. The reversal of 6408440743 is 3470448046.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6408440743 is a prime.

It is a super-2 number, since 2×6408440743² = 82136225513084784098, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6408440696 and 6408440705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6408440747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3204220371 + 3204220372.

It is an arithmetic number, because the mean of its divisors is an integer number (3204220372).

Almost surely, 2^6408440743 is an apocalyptic number.

6408440743 is a deficient number, since it is larger than the sum of its proper divisors (1).

6408440743 is an equidigital number, since it uses as much as digits as its factorization.

6408440743 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 258048, while the sum is 40.

The square root of 6408440743 is about 80052.7372611331. The cubic root of 6408440743 is about 1857.4513927649.

Adding to 6408440743 its reverse (3470448046), we get a palindrome (9878888789).

The spelling of 6408440743 in words is "six billion, four hundred eight million, four hundred forty thousand, seven hundred forty-three".