9090005 has 8 divisors (see below), whose sum is σ = 10935000. Its totient is φ = 7254016.

The previous prime is 9089989. The next prime is 9090007. The reversal of 9090005 is 5000909.

It can be written as a sum of positive squares in 4 ways, for example, as 528529 + 8561476 = 727^2 + 2926^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 9090005 - 2⁴ = 9089989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9090007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221 + ... + 4269.

It is an arithmetic number, because the mean of its divisors is an integer number (1366875).

Almost surely, 2^9090005 is an apocalyptic number.

It is an amenable number.

9090005 is a deficient number, since it is larger than the sum of its proper divisors (1844995).

9090005 is a wasteful number, since it uses less digits than its factorization.

9090005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4503.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 9090005 is about 3014.9635155338. The cubic root of 9090005 is about 208.6994833957.

The spelling of 9090005 in words is "nine million, ninety thousand, five".