8438809 has 4 divisors (see below), whose sum is σ = 8454160. Its totient is φ = 8423460.

The previous prime is 8438779. The next prime is 8438813. The reversal of 8438809 is 9088348.

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 a de Polignac number, because none of the positive numbers 2^k-8438809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8438609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6819 + ... + 7960.

It is an arithmetic number, because the mean of its divisors is an integer number (2113540).

Almost surely, 2^8438809 is an apocalyptic number.

It is an amenable number.

8438809 is a deficient number, since it is larger than the sum of its proper divisors (15351).

8438809 is a wasteful number, since it uses less digits than its factorization.

8438809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15350.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 8438809 is about 2904.9628224816. The cubic root of 8438809 is about 203.5918486192.

The spelling of 8438809 in words is "eight million, four hundred thirty-eight thousand, eight hundred nine".