7991343 has 24 divisors (see below), whose sum is σ = 12870000. Its totient is φ = 4748544.

The previous prime is 7991341. The next prime is 7991369. The reversal of 7991343 is 3431997.

It is not a de Polignac number, because 7991343 - 2¹ = 7991341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7991298 and 7991307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7991341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1533 + ... + 4281.

It is an arithmetic number, because the mean of its divisors is an integer number (536250).

Almost surely, 2^7991343 is an apocalyptic number.

7991343 is a deficient number, since it is larger than the sum of its proper divisors (4878657).

7991343 is a wasteful number, since it uses less digits than its factorization.

7991343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2791 (or 2788 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 7991343 is about 2826.8963546618. The cubic root of 7991343 is about 199.9278322956.

The spelling of 7991343 in words is "seven million, nine hundred ninety-one thousand, three hundred forty-three".