8545409 has 8 divisors (see below), whose sum is σ = 8870568. Its totient is φ = 8225280.

The previous prime is 8545387. The next prime is 8545417. The reversal of 8545409 is 9045458.

8545409 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 394384 + 8151025 = 628^2 + 2855^2 .

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 8545409 - 2⁸ = 8545153 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 (8545469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2399 + ... + 4779.

It is an arithmetic number, because the mean of its divisors is an integer number (1108821).

Almost surely, 2^8545409 is an apocalyptic number.

It is an amenable number.

8545409 is a deficient number, since it is larger than the sum of its proper divisors (325159).

8545409 is a wasteful number, since it uses less digits than its factorization.

8545409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2515.

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 8545409 is about 2923.2531535945. The cubic root of 8545409 is about 204.4455292182.

The spelling of 8545409 in words is "eight million, five hundred forty-five thousand, four hundred nine".