80956829 has 2 divisors, whose sum is σ = 80956830. Its totient is φ = 80956828.

The previous prime is 80956783. The next prime is 80956847. The reversal of 80956829 is 92865908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76125625 + 4831204 = 8725^2 + 2198^2 .

It is a cyclic number.

It is not a de Polignac number, because 80956829 - 2¹² = 80952733 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80956859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40478414 + 40478415.

It is an arithmetic number, because the mean of its divisors is an integer number (40478415).

Almost surely, 2^80956829 is an apocalyptic number.

It is an amenable number.

80956829 is a deficient number, since it is larger than the sum of its proper divisors (1).

80956829 is an equidigital number, since it uses as much as digits as its factorization.

80956829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 80956829 is about 8997.6012914554. The cubic root of 80956829 is about 432.5979890909.

The spelling of 80956829 in words is "eighty million, nine hundred fifty-six thousand, eight hundred twenty-nine".