4399406 has 16 divisors (see below), whose sum is σ = 7233408. Its totient is φ = 1990200.

The previous prime is 4399399. The next prime is 4399457. The reversal of 4399406 is 6049934.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6521 + ... + 7163.

It is an arithmetic number, because the mean of its divisors is an integer number (452088).

Almost surely, 2^4399406 is an apocalyptic number.

4399406 is a deficient number, since it is larger than the sum of its proper divisors (2834002).

4399406 is a wasteful number, since it uses less digits than its factorization.

4399406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 4399406 is about 2097.4761023668. The cubic root of 4399406 is about 163.8568798968.

The spelling of 4399406 in words is "four million, three hundred ninety-nine thousand, four hundred six".