8099813 has 4 divisors (see below), whose sum is σ = 8108460. Its totient is φ = 8091168.

The previous prime is 8099797. The next prime is 8099821. The reversal of 8099813 is 3189908.

8099813 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 brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1329409 + 6770404 = 1153^2 + 2602^2 .

It is a cyclic number.

It is not a de Polignac number, because 8099813 - 2⁴ = 8099797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8099843) 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, 2720 + ... + 4857.

It is an arithmetic number, because the mean of its divisors is an integer number (2027115).

Almost surely, 2^8099813 is an apocalyptic number.

It is an amenable number.

8099813 is a deficient number, since it is larger than the sum of its proper divisors (8647).

8099813 is a wasteful number, since it uses less digits than its factorization.

8099813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8646.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 8099813 is about 2846.0170414107. The cubic root of 8099813 is about 200.8283395317.

The spelling of 8099813 in words is "eight million, ninety-nine thousand, eight hundred thirteen".