8364409 has 4 divisors (see below), whose sum is σ = 8378100. Its totient is φ = 8350720.

The previous prime is 8364379. The next prime is 8364431. The reversal of 8364409 is 9044638.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9044638 = 2 ⋅4522319.

It can be written as a sum of positive squares in 2 ways, for example, as 6325225 + 2039184 = 2515^2 + 1428^2 .

It is a cyclic number.

It is not a de Polignac number, because 8364409 - 2⁷ = 8364281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8364509) 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, 5884 + ... + 7165.

It is an arithmetic number, because the mean of its divisors is an integer number (2094525).

Almost surely, 2^8364409 is an apocalyptic number.

It is an amenable number.

8364409 is a deficient number, since it is larger than the sum of its proper divisors (13691).

8364409 is a wasteful number, since it uses less digits than its factorization.

8364409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13690.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 8364409 is about 2892.1288007279. The cubic root of 8364409 is about 202.9917652188.

The spelling of 8364409 in words is "eight million, three hundred sixty-four thousand, four hundred nine".