89649689 has 2 divisors, whose sum is σ = 89649690. Its totient is φ = 89649688.

The previous prime is 89649683. The next prime is 89649691. The reversal of 89649689 is 98694698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89624089 + 25600 = 9467^2 + 160^2 .

It is a cyclic number.

It is not a de Polignac number, because 89649689 - 2⁴ = 89649673 is a prime.

Together with 89649691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89649683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44824844 + 44824845.

It is an arithmetic number, because the mean of its divisors is an integer number (44824845).

Almost surely, 2^89649689 is an apocalyptic number.

It is an amenable number.

89649689 is a deficient number, since it is larger than the sum of its proper divisors (1).

89649689 is an equidigital number, since it uses as much as digits as its factorization.

89649689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6718464, while the sum is 59.

The square root of 89649689 is about 9468.3519685318. The cubic root of 89649689 is about 447.5582796042.

The spelling of 89649689 in words is "eighty-nine million, six hundred forty-nine thousand, six hundred eighty-nine".