8097409 has 4 divisors (see below), whose sum is σ = 8376660. Its totient is φ = 7818160.

The previous prime is 8097371. The next prime is 8097431. The reversal of 8097409 is 9047908.

It is a happy number.

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 2241009 + 5856400 = 1497^2 + 2420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8097409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8097469) 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, 139582 + ... + 139639.

It is an arithmetic number, because the mean of its divisors is an integer number (2094165).

Almost surely, 2^8097409 is an apocalyptic number.

It is an amenable number.

8097409 is a deficient number, since it is larger than the sum of its proper divisors (279251).

8097409 is a wasteful number, since it uses less digits than its factorization.

8097409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279250.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 8097409 is about 2845.5946654434. The cubic root of 8097409 is about 200.8084691512.

The spelling of 8097409 in words is "eight million, ninety-seven thousand, four hundred nine".