80994773 has 2 divisors, whose sum is σ = 80994774. Its totient is φ = 80994772.

The previous prime is 80994751. The next prime is 80994839. The reversal of 80994773 is 37749908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80317444 + 677329 = 8962^2 + 823^2 .

It is a cyclic number.

It is not a de Polignac number, because 80994773 - 2¹² = 80990677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80994703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40497386 + 40497387.

It is an arithmetic number, because the mean of its divisors is an integer number (40497387).

Almost surely, 2^80994773 is an apocalyptic number.

It is an amenable number.

80994773 is a deficient number, since it is larger than the sum of its proper divisors (1).

80994773 is an equidigital number, since it uses as much as digits as its factorization.

80994773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 80994773 is about 8999.7096064262. The cubic root of 80994773 is about 432.6655639309.

The spelling of 80994773 in words is "eighty million, nine hundred ninety-four thousand, seven hundred seventy-three".