89667917 has 2 divisors, whose sum is σ = 89667918. Its totient is φ = 89667916.

The previous prime is 89667889. The next prime is 89667931. The reversal of 89667917 is 71976698.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63186601 + 26481316 = 7949^2 + 5146^2 .

It is a cyclic number.

It is not a de Polignac number, because 89667917 - 2⁸ = 89667661 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 (89667937) 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, 44833958 + 44833959.

It is an arithmetic number, because the mean of its divisors is an integer number (44833959).

Almost surely, 2^89667917 is an apocalyptic number.

It is an amenable number.

89667917 is a deficient number, since it is larger than the sum of its proper divisors (1).

89667917 is an equidigital number, since it uses as much as digits as its factorization.

89667917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 53.

The square root of 89667917 is about 9469.3144947245. The cubic root of 89667917 is about 447.5886107727.

The spelling of 89667917 in words is "eighty-nine million, six hundred sixty-seven thousand, nine hundred seventeen".