3981713 has 4 divisors (see below), whose sum is σ = 3985920. Its totient is φ = 3977508.

The previous prime is 3981709. The next prime is 3981739. The reversal of 3981713 is 3171893.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3981713 - 2² = 3981709 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3981713.

It is not an unprimeable number, because it can be changed into a prime (3981763) 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, 56 + ... + 2822.

It is an arithmetic number, because the mean of its divisors is an integer number (996480).

Almost surely, 2^3981713 is an apocalyptic number.

It is an amenable number.

3981713 is a deficient number, since it is larger than the sum of its proper divisors (4207).

3981713 is a wasteful number, since it uses less digits than its factorization.

3981713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206.

The product of its digits is 4536, while the sum is 32.

The square root of 3981713 is about 1995.4230127970. The cubic root of 3981713 is about 158.4978289200.

The spelling of 3981713 in words is "three million, nine hundred eighty-one thousand, seven hundred thirteen".