3981711 has 4 divisors (see below), whose sum is σ = 5308952. Its totient is φ = 2654472.

The previous prime is 3981709. The next prime is 3981739. The reversal of 3981711 is 1171893.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3981711 - 2¹ = 3981709 is a prime.

It is a D-number.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3981911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 663616 + ... + 663621.

It is an arithmetic number, because the mean of its divisors is an integer number (1327238).

Almost surely, 2^3981711 is an apocalyptic number.

3981711 is a deficient number, since it is larger than the sum of its proper divisors (1327241).

3981711 is a wasteful number, since it uses less digits than its factorization.

3981711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1327240.

The product of its digits is 1512, while the sum is 30.

The square root of 3981711 is about 1995.4225116501. The cubic root of 3981711 is about 158.4978023824.

The spelling of 3981711 in words is "three million, nine hundred eighty-one thousand, seven hundred eleven".