80243459 has 2 divisors, whose sum is σ = 80243460. Its totient is φ = 80243458.

The previous prime is 80243413. The next prime is 80243467. The reversal of 80243459 is 95434208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80243459 - 2²⁰ = 79194883 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80243659) 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 as a sum of consecutive naturals, namely, 40121729 + 40121730.

It is an arithmetic number, because the mean of its divisors is an integer number (40121730).

Almost surely, 2^80243459 is an apocalyptic number.

80243459 is a deficient number, since it is larger than the sum of its proper divisors (1).

80243459 is an equidigital number, since it uses as much as digits as its factorization.

80243459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 80243459 is about 8957.8713431261. The cubic root of 80243459 is about 431.3235924537.

The spelling of 80243459 in words is "eighty million, two hundred forty-three thousand, four hundred fifty-nine".