8313409 has 4 divisors (see below), whose sum is σ = 8952916. Its totient is φ = 7673904.

The previous prime is 8313377. The next prime is 8313413. The reversal of 8313409 is 9043138.

8313409 is digitally balanced in base 3, 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.

It can be written as a sum of positive squares in 2 ways, for example, as 1795600 + 6517809 = 1340^2 + 2553^2 .

It is a cyclic number.

It is not a de Polignac number, because 8313409 - 2⁵ = 8313377 is a prime.

It is a super-2 number, since 2×8313409² = 138225538402562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8313449) 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 3 ways as a sum of consecutive naturals, for example, 319734 + ... + 319759.

It is an arithmetic number, because the mean of its divisors is an integer number (2238229).

Almost surely, 2^8313409 is an apocalyptic number.

It is an amenable number.

8313409 is a deficient number, since it is larger than the sum of its proper divisors (639507).

8313409 is a wasteful number, since it uses less digits than its factorization.

8313409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639506.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 8313409 is about 2883.2982849508. The cubic root of 8313409 is about 202.5783591475.

The spelling of 8313409 in words is "eight million, three hundred thirteen thousand, four hundred nine".