8389406 has 16 divisors (see below), whose sum is σ = 13271040. Its totient is φ = 3971640.

The previous prime is 8389373. The next prime is 8389441. The reversal of 8389406 is 6049838.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8389406.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 1475 + ... + 4353.

It is an arithmetic number, because the mean of its divisors is an integer number (829440).

Almost surely, 2^8389406 is an apocalyptic number.

8389406 is a deficient number, since it is larger than the sum of its proper divisors (4881634).

8389406 is a wasteful number, since it uses less digits than its factorization.

8389406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 8389406 is about 2896.4471339902. The cubic root of 8389406 is about 203.1937774512.

The spelling of 8389406 in words is "eight million, three hundred eighty-nine thousand, four hundred six".