6399080 has 16 divisors (see below), whose sum is σ = 14398020. Its totient is φ = 2559616.

The previous prime is 6399059. The next prime is 6399091. The reversal of 6399080 is 809936.

It can be written as a sum of positive squares in 2 ways, for example, as 5354596 + 1044484 = 2314^2 + 1022^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6399080.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79949 + ... + 80028.

Almost surely, 2^6399080 is an apocalyptic number.

It is an amenable number.

6399080 is an abundant number, since it is smaller than the sum of its proper divisors (7998940).

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

6399080 is a wasteful number, since it uses less digits than its factorization.

6399080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159988 (or 159984 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 6399080 is about 2529.6402906342. The cubic root of 6399080 is about 185.6546565396.

The spelling of 6399080 in words is "six million, three hundred ninety-nine thousand, eighty".