7998443 has 2 divisors, whose sum is σ = 7998444. Its totient is φ = 7998442.

The previous prime is 7998437. The next prime is 7998451. The reversal of 7998443 is 3448997.

It is a weak prime.

7998443 is a truncatable prime.

It is an emirp because it is prime and its reverse (3448997) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7998443 - 2⁶ = 7998379 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7998394 and 7998403.

It is not a weakly prime, because it can be changed into another prime (7998643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3999221 + 3999222.

It is an arithmetic number, because the mean of its divisors is an integer number (3999222).

Almost surely, 2^7998443 is an apocalyptic number.

7998443 is a deficient number, since it is larger than the sum of its proper divisors (1).

7998443 is an equidigital number, since it uses as much as digits as its factorization.

7998443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 7998443 is about 2828.1518700381. The cubic root of 7998443 is about 199.9870241582.

The spelling of 7998443 in words is "seven million, nine hundred ninety-eight thousand, four hundred forty-three".