6436443446 has 16 divisors (see below), whose sum is σ = 9691418880. Its totient is φ = 3205984320.

The previous prime is 6436443407. The next prime is 6436443449. The reversal of 6436443446 is 6443446346.

It is a junction number, because it is equal to n+sod(n) for n = 6436443397 and 6436443406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6436443449) 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, 1545515 + ... + 1549673.

It is an arithmetic number, because the mean of its divisors is an integer number (605713680).

Almost surely, 2^6436443446 is an apocalyptic number.

6436443446 is a deficient number, since it is larger than the sum of its proper divisors (3254975434).

6436443446 is a wasteful number, since it uses less digits than its factorization.

6436443446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919.

The product of its digits is 1990656, while the sum is 44.

The square root of 6436443446 is about 80227.4482082037. The cubic root of 6436443446 is about 1860.1529382472.

The spelling of 6436443446 in words is "six billion, four hundred thirty-six million, four hundred forty-three thousand, four hundred forty-six".