80082991 has 2 divisors, whose sum is σ = 80082992. Its totient is φ = 80082990.

The previous prime is 80082979. The next prime is 80082997. The reversal of 80082991 is 19928008.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80082991 - 2⁹ = 80082479 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 80082991.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80082997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40041495 + 40041496.

It is an arithmetic number, because the mean of its divisors is an integer number (40041496).

Almost surely, 2^80082991 is an apocalyptic number.

80082991 is a deficient number, since it is larger than the sum of its proper divisors (1).

80082991 is an equidigital number, since it uses as much as digits as its factorization.

80082991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 80082991 is about 8948.9100453631. The cubic root of 80082991 is about 431.0358854206.

The spelling of 80082991 in words is "eighty million, eighty-two thousand, nine hundred ninety-one".