7999243 has 8 divisors (see below), whose sum is σ = 9165312. Its totient is φ = 6839016.

The previous prime is 7999241. The next prime is 7999249. The reversal of 7999243 is 3429997.

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 7999243 - 2¹ = 7999241 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 7999243.

It is not an unprimeable number, because it can be changed into a prime (7999241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2046 + ... + 4492.

It is an arithmetic number, because the mean of its divisors is an integer number (1145664).

Almost surely, 2^7999243 is an apocalyptic number.

7999243 is a deficient number, since it is larger than the sum of its proper divisors (1166069).

7999243 is a wasteful number, since it uses less digits than its factorization.

7999243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2921.

The product of its digits is 122472, while the sum is 43.

The square root of 7999243 is about 2828.2933016220. The cubic root of 7999243 is about 199.9936914677.

The spelling of 7999243 in words is "seven million, nine hundred ninety-nine thousand, two hundred forty-three".