80855447 has 2 divisors, whose sum is σ = 80855448. Its totient is φ = 80855446.

The previous prime is 80855441. The next prime is 80855461. The reversal of 80855447 is 74455808.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80855447 - 2²⁶ = 13746583 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80855441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40427723 + 40427724.

It is an arithmetic number, because the mean of its divisors is an integer number (40427724).

Almost surely, 2^80855447 is an apocalyptic number.

80855447 is a deficient number, since it is larger than the sum of its proper divisors (1).

80855447 is an equidigital number, since it uses as much as digits as its factorization.

80855447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 179200, while the sum is 41.

The square root of 80855447 is about 8991.9656916605. The cubic root of 80855447 is about 432.4173332598.

The spelling of 80855447 in words is "eighty million, eight hundred fifty-five thousand, four hundred forty-seven".