3986743 has 4 divisors (see below), whose sum is σ = 4007808. Its totient is φ = 3965680.

The previous prime is 3986737. The next prime is 3986747. The reversal of 3986743 is 3476893.

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

It is a cyclic number.

It is not a de Polignac number, because 3986743 - 2⁵ = 3986711 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3986696 and 3986705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986747) 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, 10246 + ... + 10627.

It is an arithmetic number, because the mean of its divisors is an integer number (1001952).

Almost surely, 2^3986743 is an apocalyptic number.

3986743 is a deficient number, since it is larger than the sum of its proper divisors (21065).

3986743 is a wasteful number, since it uses less digits than its factorization.

3986743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21064.

The product of its digits is 108864, while the sum is 40.

The square root of 3986743 is about 1996.6829993767. The cubic root of 3986743 is about 158.5645429702.

The spelling of 3986743 in words is "three million, nine hundred eighty-six thousand, seven hundred forty-three".