3959646 has 8 divisors (see below), whose sum is σ = 7919304. Its totient is φ = 1319880.

The previous prime is 3959591. The next prime is 3959651. The reversal of 3959646 is 6469593.

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

3959646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 3959598 and 3959607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 329965 + ... + 329976.

It is an arithmetic number, because the mean of its divisors is an integer number (989913).

Almost surely, 2^3959646 is an apocalyptic number.

3959646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3959646 is a wasteful number, since it uses less digits than its factorization.

3959646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659946.

The product of its digits is 174960, while the sum is 42.

The square root of 3959646 is about 1989.8859263787. The cubic root of 3959646 is about 158.2044834143.

It can be divided in two parts, 39 and 59646, that added together give a triangular number (59685 = T₃₄₅).

The spelling of 3959646 in words is "three million, nine hundred fifty-nine thousand, six hundred forty-six".