3981356 has 6 divisors (see below), whose sum is σ = 6967380. Its totient is φ = 1990676.

The previous prime is 3981343. The next prime is 3981389. The reversal of 3981356 is 6531893.

It is a super-6 number, since 6×3981356⁶ (a number of 41 digits) contains 666666 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497666 + ... + 497673.

It is an arithmetic number, because the mean of its divisors is an integer number (1161230).

Almost surely, 2^3981356 is an apocalyptic number.

It is an amenable number.

3981356 is a deficient number, since it is larger than the sum of its proper divisors (2986024).

3981356 is a wasteful number, since it uses less digits than its factorization.

3981356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995343 (or 995341 counting only the distinct ones).

The product of its digits is 19440, while the sum is 35.

The square root of 3981356 is about 1995.3335560753. Note that the first 3 decimals coincide. The cubic root of 3981356 is about 158.4930918118.

The spelling of 3981356 in words is "three million, nine hundred eighty-one thousand, three hundred fifty-six".