9004805 has 4 divisors (see below), whose sum is σ = 10805772. Its totient is φ = 7203840.

The previous prime is 9004771. The next prime is 9004811. The reversal of 9004805 is 5084009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5084009 = 7 ⋅726287.

It can be written as a sum of positive squares in 2 ways, for example, as 4674244 + 4330561 = 2162^2 + 2081^2 .

It is not a de Polignac number, because 9004805 - 2⁶ = 9004741 is a prime.

It is a Duffinian number.

It is a congruent 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, 900476 + ... + 900485.

It is an arithmetic number, because the mean of its divisors is an integer number (2701443).

Almost surely, 2^9004805 is an apocalyptic number.

It is an amenable number.

9004805 is a deficient number, since it is larger than the sum of its proper divisors (1800967).

9004805 is a wasteful number, since it uses less digits than its factorization.

9004805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1800966.

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

The square root of 9004805 is about 3000.8007264729. The cubic root of 9004805 is about 208.0453935074.

The spelling of 9004805 in words is "nine million, four thousand, eight hundred five".