6400224799 has 4 divisors (see below), whose sum is σ = 6400569400. Its totient is φ = 6399880200.

The previous prime is 6400224793. The next prime is 6400224823. The reversal of 6400224799 is 9974220046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6400224799 - 2¹⁹ = 6399700511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400224793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142752 + ... + 182149.

It is an arithmetic number, because the mean of its divisors is an integer number (1600142350).

Almost surely, 2^6400224799 is an apocalyptic number.

6400224799 is a deficient number, since it is larger than the sum of its proper divisors (344601).

6400224799 is a wasteful number, since it uses less digits than its factorization.

6400224799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344600.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 6400224799 is about 80001.4049814127. The cubic root of 6400224799 is about 1856.6572712016.

The spelling of 6400224799 in words is "six billion, four hundred million, two hundred twenty-four thousand, seven hundred ninety-nine".