9000409 has 4 divisors (see below), whose sum is σ = 9818640. Its totient is φ = 8182180.

The previous prime is 9000403. The next prime is 9000427. The reversal of 9000409 is 9040009.

9000409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9040009 = 11 ⋅821819.

It is a cyclic number.

It is not a de Polignac number, because 9000409 - 2⁵ = 9000377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 9000409.

It is not an unprimeable number, because it can be changed into a prime (9000403) 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, 409099 + ... + 409120.

It is an arithmetic number, because the mean of its divisors is an integer number (2454660).

Almost surely, 2^9000409 is an apocalyptic number.

It is an amenable number.

9000409 is a deficient number, since it is larger than the sum of its proper divisors (818231).

9000409 is a wasteful number, since it uses less digits than its factorization.

9000409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818230.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 9000409 is about 3000.0681658922. The cubic root of 9000409 is about 208.0115331993.

It can be divided in two parts, 9000 and 409, that added together give a square (9409 = 97²).

The spelling of 9000409 in words is "nine million, four hundred nine", and thus it is an aban number.