3981494444 has 6 divisors (see below), whose sum is σ = 6967615284. Its totient is φ = 1990747220.

The previous prime is 3981494443. The next prime is 3981494453. The reversal of 3981494444 is 4444941893.

It is a junction number, because it is equal to n+sod(n) for n = 3981494392 and 3981494401.

It is not an unprimeable number, because it can be changed into a prime (3981494443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497686802 + ... + 497686809.

It is an arithmetic number, because the mean of its divisors is an integer number (1161269214).

Almost surely, 2^3981494444 is an apocalyptic number.

It is an amenable number.

3981494444 is a deficient number, since it is larger than the sum of its proper divisors (2986120840).

3981494444 is a wasteful number, since it uses less digits than its factorization.

3981494444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995373615 (or 995373613 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 50.

The square root of 3981494444 is about 63099.0843356700. The cubic root of 3981494444 is about 1584.9492888803.

The spelling of 3981494444 in words is "three billion, nine hundred eighty-one million, four hundred ninety-four thousand, four hundred forty-four".