4001943 has 8 divisors (see below), whose sum is σ = 5821056. Its totient is φ = 2425400.

The previous prime is 4001939. The next prime is 4001947. The reversal of 4001943 is 3491004.

4001943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4001939) and next prime (4001947).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4001943 - 2² = 4001939 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60603 + ... + 60668.

It is an arithmetic number, because the mean of its divisors is an integer number (727632).

Almost surely, 2^4001943 is an apocalyptic number.

4001943 is a deficient number, since it is larger than the sum of its proper divisors (1819113).

4001943 is a wasteful number, since it uses less digits than its factorization.

4001943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121285.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4001943 is about 2000.4856910261. The cubic root of 4001943 is about 158.7658037050.

Adding to 4001943 its reverse (3491004), we get a palindrome (7492947).

The spelling of 4001943 in words is "four million, one thousand, nine hundred forty-three".