80786449 has 2 divisors, whose sum is σ = 80786450. Its totient is φ = 80786448.

The previous prime is 80786443. The next prime is 80786479. The reversal of 80786449 is 94468708.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74511424 + 6275025 = 8632^2 + 2505^2 .

It is a cyclic number.

It is not a de Polignac number, because 80786449 - 2⁹ = 80785937 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 80786399 and 80786408.

It is not a weakly prime, because it can be changed into another prime (80786443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40393224 + 40393225.

It is an arithmetic number, because the mean of its divisors is an integer number (40393225).

Almost surely, 2^80786449 is an apocalyptic number.

It is an amenable number.

80786449 is a deficient number, since it is larger than the sum of its proper divisors (1).

80786449 is an equidigital number, since it uses as much as digits as its factorization.

80786449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 80786449 is about 8988.1282256096. The cubic root of 80786449 is about 432.2942971374.

The spelling of 80786449 in words is "eighty million, seven hundred eighty-six thousand, four hundred forty-nine".