3981044 has 12 divisors (see below), whose sum is σ = 6993924. Its totient is φ = 1982784.

The previous prime is 3981037. The next prime is 3981067. The reversal of 3981044 is 4401893.

3981044 = T₁₁ + T₁₂ + ... + T₂₈₇.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 3020644 = 980^2 + 1738^2 .

It is a super-2 number, since 2×3981044² = 31697422659872, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3980998 and 3981016.

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, 689 + ... + 2904.

It is an arithmetic number, because the mean of its divisors is an integer number (582827).

Almost surely, 2^3981044 is an apocalyptic number.

It is an amenable number.

3981044 is a deficient number, since it is larger than the sum of its proper divisors (3012880).

3981044 is a wasteful number, since it uses less digits than its factorization.

3981044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3874 (or 3872 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 3981044 is about 1995.2553721266. The cubic root of 3981044 is about 158.4889515862.

The spelling of 3981044 in words is "three million, nine hundred eighty-one thousand, forty-four".