80916401 has 2 divisors, whose sum is σ = 80916402. Its totient is φ = 80916400.

The previous prime is 80916391. The next prime is 80916403. The reversal of 80916401 is 10461908.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71910400 + 9006001 = 8480^2 + 3001^2 .

It is a cyclic number.

It is not a de Polignac number, because 80916401 - 2⁶ = 80916337 is a prime.

Together with 80916403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80916403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40458200 + 40458201.

It is an arithmetic number, because the mean of its divisors is an integer number (40458201).

Almost surely, 2^80916401 is an apocalyptic number.

It is an amenable number.

80916401 is a deficient number, since it is larger than the sum of its proper divisors (1).

80916401 is an equidigital number, since it uses as much as digits as its factorization.

80916401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 80916401 is about 8995.3544121396. The cubic root of 80916401 is about 432.5259672337.

The spelling of 80916401 in words is "eighty million, nine hundred sixteen thousand, four hundred one".