4003873 has 2 divisors, whose sum is σ = 4003874. Its totient is φ = 4003872.

The previous prime is 4003871. The next prime is 4003877. The reversal of 4003873 is 3783004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 1595169 = 1552^2 + 1263^2 .

It is a cyclic number.

It is not a de Polignac number, because 4003873 - 2¹ = 4003871 is a prime.

Together with 4003871, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4003871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2001936 + 2001937.

It is an arithmetic number, because the mean of its divisors is an integer number (2001937).

Almost surely, 2^4003873 is an apocalyptic number.

It is an amenable number.

4003873 is a deficient number, since it is larger than the sum of its proper divisors (1).

4003873 is an equidigital number, since it uses as much as digits as its factorization.

4003873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 4003873 is about 2000.9680157364. The cubic root of 4003873 is about 158.7913220391.

Adding to 4003873 its reverse (3783004), we get a palindrome (7786877).

The spelling of 4003873 in words is "four million, three thousand, eight hundred seventy-three".