8394909 has 4 divisors (see below), whose sum is σ = 11193216. Its totient is φ = 5596604.

The previous prime is 8394907. The next prime is 8394913. The reversal of 8394909 is 9094938.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8394909 - 2¹ = 8394907 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8394907) 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, 1399149 + ... + 1399154.

It is an arithmetic number, because the mean of its divisors is an integer number (2798304).

Almost surely, 2^8394909 is an apocalyptic number.

It is an amenable number.

8394909 is a deficient number, since it is larger than the sum of its proper divisors (2798307).

8394909 is a wasteful number, since it uses less digits than its factorization.

8394909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2798306.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 8394909 is about 2897.3969351816. The cubic root of 8394909 is about 203.2381958108.

The spelling of 8394909 in words is "eight million, three hundred ninety-four thousand, nine hundred nine".