8198473309 has 4 divisors (see below), whose sum is σ = 8829125116. Its totient is φ = 7567821504.

The previous prime is 8198473301. The next prime is 8198473313. The reversal of 8198473309 is 9033748918.

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 1487259225 + 6711214084 = 38565^2 + 81922^2 .

It is a cyclic number.

It is not a de Polignac number, because 8198473309 - 2³ = 8198473301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8198473301) 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, 315325884 + ... + 315325909.

It is an arithmetic number, because the mean of its divisors is an integer number (2207281279).

Almost surely, 2^8198473309 is an apocalyptic number.

It is an amenable number.

8198473309 is a deficient number, since it is larger than the sum of its proper divisors (630651807).

8198473309 is a wasteful number, since it uses less digits than its factorization.

8198473309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630651806.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 8198473309 is about 90545.4212481228. The cubic root of 8198473309 is about 2016.4045203894.

The spelling of 8198473309 in words is "eight billion, one hundred ninety-eight million, four hundred seventy-three thousand, three hundred nine".