3966743 has 6 divisors (see below), whose sum is σ = 4360272. Its totient is φ = 3606020.

The previous prime is 3966727. The next prime is 3966761. The reversal of 3966743 is 3476693.

It is a happy number.

It is not a de Polignac number, because 3966743 - 2⁴ = 3966727 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3966697 and 3966706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3966773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16271 + ... + 16512.

It is an arithmetic number, because the mean of its divisors is an integer number (726712).

Almost surely, 2^3966743 is an apocalyptic number.

3966743 is a deficient number, since it is larger than the sum of its proper divisors (393529).

3966743 is a wasteful number, since it uses less digits than its factorization.

3966743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32805 (or 32794 counting only the distinct ones).

The product of its digits is 81648, while the sum is 38.

The square root of 3966743 is about 1991.6683960941. The cubic root of 3966743 is about 158.2989453174.

The spelling of 3966743 in words is "three million, nine hundred sixty-six thousand, seven hundred forty-three".