6399392 has 24 divisors (see below), whose sum is σ = 13007232. Its totient is φ = 3096000.

The previous prime is 6399391. The next prime is 6399397. The reversal of 6399392 is 2939936.

It is a happy number.

6399392 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (6399391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2234 + ... + 4217.

It is an arithmetic number, because the mean of its divisors is an integer number (541968).

Almost surely, 2^6399392 is an apocalyptic number.

6399392 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

6399392 is an abundant number, since it is smaller than the sum of its proper divisors (6607840).

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

6399392 is a wasteful number, since it uses less digits than its factorization.

6399392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6492 (or 6484 counting only the distinct ones).

The product of its digits is 78732, while the sum is 41.

The square root of 6399392 is about 2529.7019587295. The cubic root of 6399392 is about 185.6576738125.

The spelling of 6399392 in words is "six million, three hundred ninety-nine thousand, three hundred ninety-two".