89851481 has 2 divisors, whose sum is σ = 89851482. Its totient is φ = 89851480.

The previous prime is 89851471. The next prime is 89851499. The reversal of 89851481 is 18415898.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89113600 + 737881 = 9440^2 + 859^2 .

It is a cyclic number.

It is not a de Polignac number, because 89851481 - 2²² = 85657177 is a prime.

It is a super-2 number, since 2×89851481² = 16146577275786722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (89851471) 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, 44925740 + 44925741.

It is an arithmetic number, because the mean of its divisors is an integer number (44925741).

Almost surely, 2^89851481 is an apocalyptic number.

It is an amenable number.

89851481 is a deficient number, since it is larger than the sum of its proper divisors (1).

89851481 is an equidigital number, since it uses as much as digits as its factorization.

89851481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 44.

The square root of 89851481 is about 9479.0021099270. The cubic root of 89851481 is about 447.8938301372.

The spelling of 89851481 in words is "eighty-nine million, eight hundred fifty-one thousand, four hundred eighty-one".