4389806 has 4 divisors (see below), whose sum is σ = 6584712. Its totient is φ = 2194902.

The previous prime is 4389799. The next prime is 4389809. The reversal of 4389806 is 6089834.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4389806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097450 + ... + 1097453.

It is an arithmetic number, because the mean of its divisors is an integer number (1646178).

Almost surely, 2^4389806 is an apocalyptic number.

4389806 is a deficient number, since it is larger than the sum of its proper divisors (2194906).

4389806 is a wasteful number, since it uses less digits than its factorization.

4389806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194905.

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

The square root of 4389806 is about 2095.1863878901. The cubic root of 4389806 is about 163.7376083702.

The spelling of 4389806 in words is "four million, three hundred eighty-nine thousand, eight hundred six".