80906291 has 2 divisors, whose sum is σ = 80906292. Its totient is φ = 80906290.

The previous prime is 80906279. The next prime is 80906297. The reversal of 80906291 is 19260908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80906291 - 2¹⁰ = 80905267 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80906297) 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, 40453145 + 40453146.

It is an arithmetic number, because the mean of its divisors is an integer number (40453146).

Almost surely, 2^80906291 is an apocalyptic number.

80906291 is a deficient number, since it is larger than the sum of its proper divisors (1).

80906291 is an equidigital number, since it uses as much as digits as its factorization.

80906291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 80906291 is about 8994.7924378498. The cubic root of 80906291 is about 432.5079526754.

The spelling of 80906291 in words is "eighty million, nine hundred six thousand, two hundred ninety-one".