4387646 has 8 divisors (see below), whose sum is σ = 6609504. Its totient is φ = 2184480.

The previous prime is 4387633. The next prime is 4387661. The reversal of 4387646 is 6467834.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a d-powerful number, because it can be written as 4⁷ + 3¹⁰ + 8 + 7⁶ + 6² + 4¹¹ + 6³ .

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 3 ways as a sum of consecutive naturals, for example, 4070 + ... + 5033.

It is an arithmetic number, because the mean of its divisors is an integer number (826188).

Almost surely, 2^4387646 is an apocalyptic number.

4387646 is a deficient number, since it is larger than the sum of its proper divisors (2221858).

4387646 is a wasteful number, since it uses less digits than its factorization.

4387646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9346.

The product of its digits is 96768, while the sum is 38.

The square root of 4387646 is about 2094.6708571993. The cubic root of 4387646 is about 163.7107483178.

The spelling of 4387646 in words is "four million, three hundred eighty-seven thousand, six hundred forty-six".