4013305 has 4 divisors (see below), whose sum is σ = 4815972. Its totient is φ = 3210640.

The previous prime is 4013297. The next prime is 4013323. The reversal of 4013305 is 5033104.

4013305 = 629² + 630² + ... + 638².

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 1375929 + 2637376 = 1173^2 + 1624^2 .

It is not a de Polignac number, because 4013305 - 2³ = 4013297 is a prime.

It is a super-2 number, since 2×4013305² = 32213234046050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 401326 + ... + 401335.

It is an arithmetic number, because the mean of its divisors is an integer number (1203993).

Almost surely, 2^4013305 is an apocalyptic number.

It is an amenable number.

4013305 is a deficient number, since it is larger than the sum of its proper divisors (802667).

4013305 is an equidigital number, since it uses as much as digits as its factorization.

4013305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802666.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 4013305 is about 2003.3234886059. The cubic root of 4013305 is about 158.9159135048.

Adding to 4013305 its reverse (5033104), we get a palindrome (9046409).

The spelling of 4013305 in words is "four million, thirteen thousand, three hundred five".