6440456796 has 24 divisors (see below), whose sum is σ = 15029038080. Its totient is φ = 2146632432.

The previous prime is 6440456791. The next prime is 6440456839. The reversal of 6440456796 is 6976540446.

It is a super-2 number, since 2×6440456796² = 82958967482285171232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440456791) 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, 235525 + ... + 261443.

It is an arithmetic number, because the mean of its divisors is an integer number (626209920).

Almost surely, 2^6440456796 is an apocalyptic number.

It is an amenable number.

6440456796 is an abundant number, since it is smaller than the sum of its proper divisors (8588581284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6440456796 is a wasteful number, since it uses less digits than its factorization.

6440456796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46633 (or 46631 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The square root of 6440456796 is about 80252.4566352956. The cubic root of 6440456796 is about 1860.5394816200.

The spelling of 6440456796 in words is "six billion, four hundred forty million, four hundred fifty-six thousand, seven hundred ninety-six".