8147993 has 8 divisors (see below), whose sum is σ = 9329280. Its totient is φ = 6971040.

The previous prime is 8147987. The next prime is 8147999. The reversal of 8147993 is 3997418.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8147987) and next prime (8147999).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8147993 - 2⁴ = 8147977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8147993.

It is not an unprimeable number, because it can be changed into a prime (8147999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6653 + ... + 7781.

It is an arithmetic number, because the mean of its divisors is an integer number (1166160).

Almost surely, 2^8147993 is an apocalyptic number.

It is an amenable number.

8147993 is a deficient number, since it is larger than the sum of its proper divisors (1181287).

8147993 is a wasteful number, since it uses less digits than its factorization.

8147993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2167.

The product of its digits is 54432, while the sum is 41.

The square root of 8147993 is about 2854.4689523622. The cubic root of 8147993 is about 201.2257473700.

The spelling of 8147993 in words is "eight million, one hundred forty-seven thousand, nine hundred ninety-three".