4399688 has 16 divisors (see below), whose sum is σ = 8281980. Its totient is φ = 2191168.

The previous prime is 4399679. The next prime is 4399699. The reversal of 4399688 is 8869934.

It can be written as a sum of positive squares in 2 ways, for example, as 3912484 + 487204 = 1978^2 + 698^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406 + ... + 3282.

Almost surely, 2^4399688 is an apocalyptic number.

It is an amenable number.

4399688 is a deficient number, since it is larger than the sum of its proper divisors (3882292).

4399688 is a wasteful number, since it uses less digits than its factorization.

4399688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176 (or 2172 counting only the distinct ones).

The product of its digits is 373248, while the sum is 47.

The square root of 4399688 is about 2097.5433249399. The cubic root of 4399688 is about 163.8603808735.

The spelling of 4399688 in words is "four million, three hundred ninety-nine thousand, six hundred eighty-eight".