8112197399 has 4 divisors (see below), whose sum is σ = 8153376264. Its totient is φ = 8071018536.

The previous prime is 8112197381. The next prime is 8112197449. The reversal of 8112197399 is 9937912118.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8112197399 - 2²⁴ = 8095420183 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 (8112197339) 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, 20589137 + ... + 20589530.

It is an arithmetic number, because the mean of its divisors is an integer number (2038344066).

Almost surely, 2^8112197399 is an apocalyptic number.

8112197399 is a deficient number, since it is larger than the sum of its proper divisors (41178865).

8112197399 is a wasteful number, since it uses less digits than its factorization.

8112197399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41178864.

The product of its digits is 244944, while the sum is 50.

The square root of 8112197399 is about 90067.7378365861. The cubic root of 8112197399 is about 2009.3064114346.

The spelling of 8112197399 in words is "eight billion, one hundred twelve million, one hundred ninety-seven thousand, three hundred ninety-nine".