4080905 has 8 divisors (see below), whose sum is σ = 4946184. Its totient is φ = 3232000.

The previous prime is 4080889. The next prime is 4080907. The reversal of 4080905 is 5090804.

It can be written as a sum of positive squares in 4 ways, for example, as 1056784 + 3024121 = 1028^2 + 1739^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4080905 - 2⁴ = 4080889 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4080907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3536 + ... + 4545.

It is an arithmetic number, because the mean of its divisors is an integer number (618273).

Almost surely, 2^4080905 is an apocalyptic number.

It is an amenable number.

4080905 is a deficient number, since it is larger than the sum of its proper divisors (865279).

4080905 is a wasteful number, since it uses less digits than its factorization.

4080905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 4080905 is about 2020.1249961327. The cubic root of 4080905 is about 159.8032085772.

The spelling of 4080905 in words is "four million, eighty thousand, nine hundred five".