80975899 has 2 divisors, whose sum is σ = 80975900. Its totient is φ = 80975898.

The previous prime is 80975887. The next prime is 80975903. The reversal of 80975899 is 99857908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80975899 - 2¹⁹ = 80451611 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (80975099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40487949 + 40487950.

It is an arithmetic number, because the mean of its divisors is an integer number (40487950).

Almost surely, 2^80975899 is an apocalyptic number.

80975899 is a deficient number, since it is larger than the sum of its proper divisors (1).

80975899 is an equidigital number, since it uses as much as digits as its factorization.

80975899 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1632960, while the sum is 55.

The square root of 80975899 is about 8998.6609559423. The cubic root of 80975899 is about 432.6319536787.

The spelling of 80975899 in words is "eighty million, nine hundred seventy-five thousand, eight hundred ninety-nine".