8355243809 has 4 divisors (see below), whose sum is σ = 9114811440. Its totient is φ = 7595676180.

The previous prime is 8355243791. The next prime is 8355243847. The reversal of 8355243809 is 9083425538.

8355243809 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, 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-8355243809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8355243709) 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, 379783799 + ... + 379783820.

It is an arithmetic number, because the mean of its divisors is an integer number (2278702860).

Almost surely, 2^8355243809 is an apocalyptic number.

It is an amenable number.

8355243809 is a deficient number, since it is larger than the sum of its proper divisors (759567631).

8355243809 is a wasteful number, since it uses less digits than its factorization.

8355243809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759567630.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 8355243809 is about 91407.0227553660. The cubic root of 8355243809 is about 2029.1759627121.

The spelling of 8355243809 in words is "eight billion, three hundred fifty-five million, two hundred forty-three thousand, eight hundred nine".