89311247 has 2 divisors, whose sum is σ = 89311248. Its totient is φ = 89311246.

The previous prime is 89311241. The next prime is 89311249. The reversal of 89311247 is 74211398.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89311247 - 2¹⁰ = 89310223 is a prime.

Together with 89311249, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89311241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44655623 + 44655624.

It is an arithmetic number, because the mean of its divisors is an integer number (44655624).

Almost surely, 2^89311247 is an apocalyptic number.

89311247 is a deficient number, since it is larger than the sum of its proper divisors (1).

89311247 is an equidigital number, since it uses as much as digits as its factorization.

89311247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 35.

The square root of 89311247 is about 9450.4627929007. The cubic root of 89311247 is about 446.9943678838.

The spelling of 89311247 in words is "eighty-nine million, three hundred eleven thousand, two hundred forty-seven".