3941643 has 4 divisors (see below), whose sum is σ = 5255528. Its totient is φ = 2627760.

The previous prime is 3941633. The next prime is 3941653. The reversal of 3941643 is 3461493.

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

It is an interprime number because it is at equal distance from previous prime (3941633) and next prime (3941653).

It is not a de Polignac number, because 3941643 - 2⁵ = 3941611 is a prime.

It is a D-number.

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 3941643.

It is not an unprimeable number, because it can be changed into a prime (3941633) 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, 656938 + ... + 656943.

It is an arithmetic number, because the mean of its divisors is an integer number (1313882).

Almost surely, 2^3941643 is an apocalyptic number.

3941643 is a deficient number, since it is larger than the sum of its proper divisors (1313885).

3941643 is a wasteful number, since it uses less digits than its factorization.

3941643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313884.

The product of its digits is 7776, while the sum is 30.

The square root of 3941643 is about 1985.3571467119. The cubic root of 3941643 is about 157.9643539732.

The spelling of 3941643 in words is "three million, nine hundred forty-one thousand, six hundred forty-three".