3981526 has 16 divisors (see below), whose sum is σ = 6505200. Its totient is φ = 1820448.

The previous prime is 3981517. The next prime is 3981539. The reversal of 3981526 is 6251893.

3981526 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 3981491 and 3981500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 705 + ... + 2908.

It is an arithmetic number, because the mean of its divisors is an integer number (406575).

Almost surely, 2^3981526 is an apocalyptic number.

3981526 is a deficient number, since it is larger than the sum of its proper divisors (2523674).

3981526 is a wasteful number, since it uses less digits than its factorization.

3981526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663.

The product of its digits is 12960, while the sum is 34.

The square root of 3981526 is about 1995.3761550144. The cubic root of 3981526 is about 158.4953476129.

The spelling of 3981526 in words is "three million, nine hundred eighty-one thousand, five hundred twenty-six".