80945443 has 2 divisors, whose sum is σ = 80945444. Its totient is φ = 80945442.

The previous prime is 80945437. The next prime is 80945497. The reversal of 80945443 is 34454908.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80945443 - 2⁹ = 80944931 is a prime.

It is not a weakly prime, because it can be changed into another prime (80945413) 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, 40472721 + 40472722.

It is an arithmetic number, because the mean of its divisors is an integer number (40472722).

Almost surely, 2^80945443 is an apocalyptic number.

80945443 is a deficient number, since it is larger than the sum of its proper divisors (1).

80945443 is an equidigital number, since it uses as much as digits as its factorization.

80945443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 80945443 is about 8996.9685450156. The cubic root of 80945443 is about 432.5777075338.

The spelling of 80945443 in words is "eighty million, nine hundred forty-five thousand, four hundred forty-three".