89666893 has 2 divisors, whose sum is σ = 89666894. Its totient is φ = 89666892.

The previous prime is 89666887. The next prime is 89666933. The reversal of 89666893 is 39866698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47637604 + 42029289 = 6902^2 + 6483^2 .

It is a cyclic number.

It is not a de Polignac number, because 89666893 - 2⁵ = 89666861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89666393) 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, 44833446 + 44833447.

It is an arithmetic number, because the mean of its divisors is an integer number (44833447).

Almost surely, 2^89666893 is an apocalyptic number.

It is an amenable number.

89666893 is a deficient number, since it is larger than the sum of its proper divisors (1).

89666893 is an equidigital number, since it uses as much as digits as its factorization.

89666893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3359232, while the sum is 55.

The square root of 89666893 is about 9469.2604251863. The cubic root of 89666893 is about 447.5869069583.

The spelling of 89666893 in words is "eighty-nine million, six hundred sixty-six thousand, eight hundred ninety-three".