3909844 has 12 divisors (see below), whose sum is σ = 7063168. Its totient is φ = 1891800.

The previous prime is 3909817. The next prime is 3909853. The reversal of 3909844 is 4489093.

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, 15642 + ... + 15889.

Almost surely, 2^3909844 is an apocalyptic number.

It is an amenable number.

3909844 is a deficient number, since it is larger than the sum of its proper divisors (3153324).

3909844 is a wasteful number, since it uses less digits than its factorization.

3909844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31566 (or 31564 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 3909844 is about 1977.3325466395. The cubic root of 3909844 is about 157.5384167647.

It can be divided in two parts, 3909 and 844, that added together give a triangular number (4753 = T₉₇).

The spelling of 3909844 in words is "three million, nine hundred nine thousand, eight hundred forty-four".