6396440763 has 8 divisors (see below), whose sum is σ = 8977460800. Its totient is φ = 4039857288.

The previous prime is 6396440759. The next prime is 6396440773. The reversal of 6396440763 is 3670446936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6396440763 - 2² = 6396440759 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6396440753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56109073 + ... + 56109186.

It is an arithmetic number, because the mean of its divisors is an integer number (1122182600).

Almost surely, 2^6396440763 is an apocalyptic number.

6396440763 is a deficient number, since it is larger than the sum of its proper divisors (2581020037).

6396440763 is a wasteful number, since it uses less digits than its factorization.

6396440763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112218281.

The product of its (nonzero) digits is 1959552, while the sum is 48.

The square root of 6396440763 is about 79977.7516750752. The cubic root of 6396440763 is about 1856.2912922329.

The spelling of 6396440763 in words is "six billion, three hundred ninety-six million, four hundred forty thousand, seven hundred sixty-three".