4399806 has 8 divisors (see below), whose sum is σ = 8799624. Its totient is φ = 1466600.

The previous prime is 4399789. The next prime is 4399817. The reversal of 4399806 is 6089934.

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

4399806 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366645 + ... + 366656.

It is an arithmetic number, because the mean of its divisors is an integer number (1099953).

Almost surely, 2^4399806 is an apocalyptic number.

4399806 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

4399806 is a wasteful number, since it uses less digits than its factorization.

4399806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 733306.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 4399806 is about 2097.5714528950. The cubic root of 4399806 is about 163.8618457768.

The spelling of 4399806 in words is "four million, three hundred ninety-nine thousand, eight hundred six".