4013873 has 4 divisors (see below), whose sum is σ = 4049508. Its totient is φ = 3978240.

The previous prime is 4013857. The next prime is 4013881. The reversal of 4013873 is 3783104.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1507984 + 2505889 = 1228^2 + 1583^2 .

It is a cyclic number.

It is not a de Polignac number, because 4013873 - 2⁴ = 4013857 is a prime.

It is a super-2 number, since 2×4013873² = 32222352920258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4013473) 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, 17648 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (1012377).

Almost surely, 2^4013873 is an apocalyptic number.

It is an amenable number.

4013873 is a deficient number, since it is larger than the sum of its proper divisors (35635).

4013873 is a wasteful number, since it uses less digits than its factorization.

4013873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35634.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 4013873 is about 2003.4652480141. The cubic root of 4013873 is about 158.9234102339.

Adding to 4013873 its reverse (3783104), we get a palindrome (7796977).

The spelling of 4013873 in words is "four million, thirteen thousand, eight hundred seventy-three".