80385091 has 2 divisors, whose sum is σ = 80385092. Its totient is φ = 80385090.

The previous prime is 80384989. The next prime is 80385101. The reversal of 80385091 is 19058308.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80385091 - 2¹⁷ = 80254019 is a prime.

It is not a weakly prime, because it can be changed into another prime (80385491) 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, 40192545 + 40192546.

It is an arithmetic number, because the mean of its divisors is an integer number (40192546).

Almost surely, 2^80385091 is an apocalyptic number.

80385091 is a deficient number, since it is larger than the sum of its proper divisors (1).

80385091 is an equidigital number, since it uses as much as digits as its factorization.

80385091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 80385091 is about 8965.7733074175. The cubic root of 80385091 is about 431.5772094571.

The spelling of 80385091 in words is "eighty million, three hundred eighty-five thousand, ninety-one".