3928444 has 24 divisors (see below), whose sum is σ = 7645568. Its totient is φ = 1753920.

The previous prime is 3928429. The next prime is 3928447. The reversal of 3928444 is 4448293.

It is a super-2 number, since 2×3928444² = 30865344522272, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394 + ... + 2830.

Almost surely, 2^3928444 is an apocalyptic number.

It is an amenable number.

3928444 is a deficient number, since it is larger than the sum of its proper divisors (3717124).

3928444 is a wasteful number, since it uses less digits than its factorization.

3928444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485 (or 2483 counting only the distinct ones).

The product of its digits is 27648, while the sum is 34.

The square root of 3928444 is about 1982.0302722209. The cubic root of 3928444 is about 157.7878367954.

It can be divided in two parts, 392 and 8444, that added together give a square (8836 = 94²).

The spelling of 3928444 in words is "three million, nine hundred twenty-eight thousand, four hundred forty-four".