9040809 has 8 divisors (see below), whose sum is σ = 12443392. Its totient is φ = 5832720.

The previous prime is 9040799. The next prime is 9040819. The reversal of 9040809 is 9080409.

9040809 = T₁₀₂ + T₁₀₃ + ... + T₃₈₀.

It is an interprime number because it is at equal distance from previous prime (9040799) and next prime (9040819).

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

It is not a de Polignac number, because 9040809 - 2⁵ = 9040777 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9040819) 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, 48514 + ... + 48699.

It is an arithmetic number, because the mean of its divisors is an integer number (1555424).

Almost surely, 2^9040809 is an apocalyptic number.

It is an amenable number.

9040809 is a deficient number, since it is larger than the sum of its proper divisors (3402583).

9040809 is a wasteful number, since it uses less digits than its factorization.

9040809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97247.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 9040809 is about 3006.7938073636. The cubic root of 9040809 is about 208.3223014247.

The spelling of 9040809 in words is "nine million, forty thousand, eight hundred nine".