89665249 has 2 divisors, whose sum is σ = 89665250. Its totient is φ = 89665248.

The previous prime is 89665231. The next prime is 89665321. The reversal of 89665249 is 94256698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89434849 + 230400 = 9457^2 + 480^2 .

It is a cyclic number.

It is not a de Polignac number, because 89665249 - 2⁹ = 89664737 is a prime.

It is not a weakly prime, because it can be changed into another prime (89665549) 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, 44832624 + 44832625.

It is an arithmetic number, because the mean of its divisors is an integer number (44832625).

Almost surely, 2^89665249 is an apocalyptic number.

It is an amenable number.

89665249 is a deficient number, since it is larger than the sum of its proper divisors (1).

89665249 is an equidigital number, since it uses as much as digits as its factorization.

89665249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 933120, while the sum is 49.

The square root of 89665249 is about 9469.1736175867. The cubic root of 89665249 is about 447.5841715103.

The spelling of 89665249 in words is "eighty-nine million, six hundred sixty-five thousand, two hundred forty-nine".