89747291 has 2 divisors, whose sum is σ = 89747292. Its totient is φ = 89747290.

The previous prime is 89747269. The next prime is 89747293. The reversal of 89747291 is 19274798.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89747291 is a prime.

Together with 89747293, 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 (89747293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44873645 + 44873646.

It is an arithmetic number, because the mean of its divisors is an integer number (44873646).

Almost surely, 2^89747291 is an apocalyptic number.

89747291 is a deficient number, since it is larger than the sum of its proper divisors (1).

89747291 is an equidigital number, since it uses as much as digits as its factorization.

89747291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 47.

The square root of 89747291 is about 9473.5046841177. The cubic root of 89747291 is about 447.7206402356.

The spelling of 89747291 in words is "eighty-nine million, seven hundred forty-seven thousand, two hundred ninety-one".