3962643 has 4 divisors (see below), whose sum is σ = 5283528. Its totient is φ = 2641760.

The previous prime is 3962641. The next prime is 3962653. The reversal of 3962643 is 3462693.

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 3962643 - 2¹ = 3962641 is a prime.

It is a D-number.

3962643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3962641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 660438 + ... + 660443.

It is an arithmetic number, because the mean of its divisors is an integer number (1320882).

Almost surely, 2^3962643 is an apocalyptic number.

3962643 is a deficient number, since it is larger than the sum of its proper divisors (1320885).

3962643 is a wasteful number, since it uses less digits than its factorization.

3962643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1320884.

The product of its digits is 23328, while the sum is 33.

The square root of 3962643 is about 1990.6388421811. The cubic root of 3962643 is about 158.2443875930.

The spelling of 3962643 in words is "three million, nine hundred sixty-two thousand, six hundred forty-three".