89719871 has 2 divisors, whose sum is σ = 89719872. Its totient is φ = 89719870.

The previous prime is 89719841. The next prime is 89719891. The reversal of 89719871 is 17891798.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89719871 - 2⁶ = 89719807 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89719811) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44859935 + 44859936.

It is an arithmetic number, because the mean of its divisors is an integer number (44859936).

Almost surely, 2^89719871 is an apocalyptic number.

89719871 is a deficient number, since it is larger than the sum of its proper divisors (1).

89719871 is an equidigital number, since it uses as much as digits as its factorization.

89719871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 50.

The square root of 89719871 is about 9472.0573794715. The cubic root of 89719871 is about 447.6750390433.

The spelling of 89719871 in words is "eighty-nine million, seven hundred nineteen thousand, eight hundred seventy-one".