89313481 has 2 divisors, whose sum is σ = 89313482. Its totient is φ = 89313480.

The previous prime is 89313443. The next prime is 89313491. The reversal of 89313481 is 18431398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 13623481 = 8700^2 + 3691^2 .

It is a cyclic number.

It is not a de Polignac number, because 89313481 - 2⁹ = 89312969 is a prime.

It is a super-3 number, since 3×89313481³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 89313481.

It is not a weakly prime, because it can be changed into another prime (89313421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44656740 + 44656741.

It is an arithmetic number, because the mean of its divisors is an integer number (44656741).

Almost surely, 2^89313481 is an apocalyptic number.

It is an amenable number.

89313481 is a deficient number, since it is larger than the sum of its proper divisors (1).

89313481 is an equidigital number, since it uses as much as digits as its factorization.

89313481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 37.

The square root of 89313481 is about 9450.5809874314. The cubic root of 89313481 is about 446.9980948391.

The spelling of 89313481 in words is "eighty-nine million, three hundred thirteen thousand, four hundred eighty-one".