8470409 has 16 divisors (see below), whose sum is σ = 9377280. Its totient is φ = 7620480.

The previous prime is 8470393. The next prime is 8470421. The reversal of 8470409 is 9040748.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8470409 - 2⁴ = 8470393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8470439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42899 + ... + 43095.

It is an arithmetic number, because the mean of its divisors is an integer number (586080).

Almost surely, 2^8470409 is an apocalyptic number.

It is an amenable number.

8470409 is a deficient number, since it is larger than the sum of its proper divisors (906871).

8470409 is a wasteful number, since it uses less digits than its factorization.

8470409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 8470409 is about 2910.3967083544. The cubic root of 8470409 is about 203.8456557135.

The spelling of 8470409 in words is "eight million, four hundred seventy thousand, four hundred nine".