3899646 has 12 divisors (see below), whose sum is σ = 8449272. Its totient is φ = 1299876.

The previous prime is 3899639. The next prime is 3899653. The reversal of 3899646 is 6469983.

It is an interprime number because it is at equal distance from previous prime (3899639) and next prime (3899653).

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, 108306 + ... + 108341.

It is an arithmetic number, because the mean of its divisors is an integer number (704106).

Almost surely, 2^3899646 is an apocalyptic number.

3899646 is an abundant number, since it is smaller than the sum of its proper divisors (4549626).

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

3899646 is a wasteful number, since it uses less digits than its factorization.

3899646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216655 (or 216652 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 3899646 is about 1974.7521363452. The cubic root of 3899646 is about 157.4013289758.

The spelling of 3899646 in words is "three million, eight hundred ninety-nine thousand, six hundred forty-six".