4001973 has 4 divisors (see below), whose sum is σ = 5335968. Its totient is φ = 2667980.

The previous prime is 4001947. The next prime is 4001999. The reversal of 4001973 is 3791004.

4001973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (4001947) and next prime (4001999).

It is a cyclic number.

It is not a de Polignac number, because 4001973 - 2⁹ = 4001461 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001873) 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 3 ways as a sum of consecutive naturals, for example, 666993 + ... + 666998.

It is an arithmetic number, because the mean of its divisors is an integer number (1333992).

Almost surely, 2^4001973 is an apocalyptic number.

It is an amenable number.

4001973 is a deficient number, since it is larger than the sum of its proper divisors (1333995).

4001973 is a wasteful number, since it uses less digits than its factorization.

4001973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333994.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 4001973 is about 2000.4931891911. The cubic root of 4001973 is about 158.7662004258.

Adding to 4001973 its reverse (3791004), we get a palindrome (7792977).

The spelling of 4001973 in words is "four million, one thousand, nine hundred seventy-three".