6471445889 has 8 divisors (see below), whose sum is σ = 6749073408. Its totient is φ = 6198122880.

The previous prime is 6471445861. The next prime is 6471445969. The reversal of 6471445889 is 9885441746.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6471445889 - 2¹² = 6471441793 is a prime.

It is a super-4 number, since 4×6471445889⁴ (a number of 40 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6471445859) 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, 1073057 + ... + 1079070.

It is an arithmetic number, because the mean of its divisors is an integer number (843634176).

Almost surely, 2^6471445889 is an apocalyptic number.

It is an amenable number.

6471445889 is a deficient number, since it is larger than the sum of its proper divisors (277627519).

6471445889 is a wasteful number, since it uses less digits than its factorization.

6471445889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152255.

The product of its digits is 7741440, while the sum is 56.

The square root of 6471445889 is about 80445.2974946330. The cubic root of 6471445889 is about 1863.5187839405.

The spelling of 6471445889 in words is "six billion, four hundred seventy-one million, four hundred forty-five thousand, eight hundred eighty-nine".