89966081 has 2 divisors, whose sum is σ = 89966082. Its totient is φ = 89966080.

The previous prime is 89966029. The next prime is 89966089. The reversal of 89966081 is 18066998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75411856 + 14554225 = 8684^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 89966081 - 2¹⁴ = 89949697 is a prime.

It is a super-2 number, since 2×89966081² = 16187791460997122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89966089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44983040 + 44983041.

It is an arithmetic number, because the mean of its divisors is an integer number (44983041).

Almost surely, 2^89966081 is an apocalyptic number.

It is an amenable number.

89966081 is a deficient number, since it is larger than the sum of its proper divisors (1).

89966081 is an equidigital number, since it uses as much as digits as its factorization.

89966081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 89966081 is about 9485.0451237725. The cubic root of 89966081 is about 448.0841695197.

The spelling of 89966081 in words is "eighty-nine million, nine hundred sixty-six thousand, eighty-one".