3981126 has 32 divisors (see below), whose sum is σ = 8317440. Its totient is φ = 1269216.

The previous prime is 3981119. The next prime is 3981137. The reversal of 3981126 is 6211893.

It is a junction number, because it is equal to n+sod(n) for n = 3981093 and 3981102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17425 + ... + 17651.

It is an arithmetic number, because the mean of its divisors is an integer number (259920).

Almost surely, 2^3981126 is an apocalyptic number.

3981126 is an abundant number, since it is smaller than the sum of its proper divisors (4336314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3981126 is a wasteful number, since it uses less digits than its factorization.

3981126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348.

The product of its digits is 2592, while the sum is 30.

The square root of 3981126 is about 1995.2759207689. The cubic root of 3981126 is about 158.4900397434.

The spelling of 3981126 in words is "three million, nine hundred eighty-one thousand, one hundred twenty-six".