6436446447 has 8 divisors (see below), whose sum is σ = 8678355120. Its totient is φ = 4242751040.

The previous prime is 6436446433. The next prime is 6436446451. The reversal of 6436446447 is 7446446346.

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

It is not a de Polignac number, because 6436446447 - 2¹⁸ = 6436184303 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6436446396 and 6436446405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6436444447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12053004 + ... + 12053537.

It is an arithmetic number, because the mean of its divisors is an integer number (1084794390).

Almost surely, 2^6436446447 is an apocalyptic number.

6436446447 is a deficient number, since it is larger than the sum of its proper divisors (2241908673).

6436446447 is a wasteful number, since it uses less digits than its factorization.

6436446447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24106633.

The product of its digits is 4644864, while the sum is 48.

The square root of 6436446447 is about 80227.4669112767. The cubic root of 6436446447 is about 1860.1532273467.

The spelling of 6436446447 in words is "six billion, four hundred thirty-six million, four hundred forty-six thousand, four hundred forty-seven".