3809646 has 16 divisors (see below), whose sum is σ = 8466000. Its totient is φ = 1269864.

The previous prime is 3809639. The next prime is 3809653. The reversal of 3809646 is 6469083.

3809646 is a `hidden beast` number, since 3 + 8 + 0 + 9 + 646 = 666.

3809646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3809639) and next prime (3809653).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3809646.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35221 + ... + 35328.

It is an arithmetic number, because the mean of its divisors is an integer number (529125).

Almost surely, 2^3809646 is an apocalyptic number.

3809646 is an abundant number, since it is smaller than the sum of its proper divisors (4656354).

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

3809646 is a wasteful number, since it uses less digits than its factorization.

3809646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70560 (or 70554 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 3809646 is about 1951.8314476409. The cubic root of 3809646 is about 156.1810029233.

The spelling of 3809646 in words is "three million, eight hundred nine thousand, six hundred forty-six".