4013863 has 4 divisors (see below), whose sum is σ = 4587280. Its totient is φ = 3440448.

The previous prime is 4013857. The next prime is 4013881. The reversal of 4013863 is 3683104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4013863 is a prime.

It is a super-2 number, since 2×4013863² = 32222192365538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4013363) 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, 286698 + ... + 286711.

It is an arithmetic number, because the mean of its divisors is an integer number (1146820).

Almost surely, 2^4013863 is an apocalyptic number.

4013863 is a deficient number, since it is larger than the sum of its proper divisors (573417).

4013863 is an equidigital number, since it uses as much as digits as its factorization.

4013863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573416.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 4013863 is about 2003.4627523366. The cubic root of 4013863 is about 158.9232782554.

Adding to 4013863 its reverse (3683104), we get a palindrome (7696967).

The spelling of 4013863 in words is "four million, thirteen thousand, eight hundred sixty-three".