4385646 has 12 divisors (see below), whose sum is σ = 9502272. Its totient is φ = 1461876.

The previous prime is 4385639. The next prime is 4385669. The reversal of 4385646 is 6465834.

4385646 is a `hidden beast` number, since 4 + 3 + 8 + 5 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 4385646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 121806 + ... + 121841.

It is an arithmetic number, because the mean of its divisors is an integer number (791856).

Almost surely, 2^4385646 is an apocalyptic number.

4385646 is an abundant number, since it is smaller than the sum of its proper divisors (5116626).

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

4385646 is a wasteful number, since it uses less digits than its factorization.

4385646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243655 (or 243652 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 4385646 is about 2094.1934008109. The cubic root of 4385646 is about 163.6858700377.

It can be divided in two parts, 438 and 5646, that added together give a square (6084 = 78²).

The spelling of 4385646 in words is "four million, three hundred eighty-five thousand, six hundred forty-six".