7998743 has 2 divisors, whose sum is σ = 7998744. Its totient is φ = 7998742.

The previous prime is 7998719. The next prime is 7998763. The reversal of 7998743 is 3478997.

It is a strong prime.

It is an emirp because it is prime and its reverse (3478997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7998743 - 2¹⁰ = 7997719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7998703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999371 + 3999372.

It is an arithmetic number, because the mean of its divisors is an integer number (3999372).

Almost surely, 2^7998743 is an apocalyptic number.

7998743 is a deficient number, since it is larger than the sum of its proper divisors (1).

7998743 is an equidigital number, since it uses as much as digits as its factorization.

7998743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 47.

The square root of 7998743 is about 2828.2049077109. The cubic root of 7998743 is about 199.9895244513.

The spelling of 7998743 in words is "seven million, nine hundred ninety-eight thousand, seven hundred forty-three".