89881313 has 2 divisors, whose sum is σ = 89881314. Its totient is φ = 89881312.

The previous prime is 89881301. The next prime is 89881333. The reversal of 89881313 is 31318898.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84787264 + 5094049 = 9208^2 + 2257^2 .

It is a cyclic number.

It is not a de Polignac number, because 89881313 - 2²² = 85687009 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (89881333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44940656 + 44940657.

It is an arithmetic number, because the mean of its divisors is an integer number (44940657).

Almost surely, 2^89881313 is an apocalyptic number.

It is an amenable number.

89881313 is a deficient number, since it is larger than the sum of its proper divisors (1).

89881313 is an equidigital number, since it uses as much as digits as its factorization.

89881313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 41.

The square root of 89881313 is about 9480.5755626966. The cubic root of 89881313 is about 447.9433937434.

It can be divided in two parts, 8988 and 1313, that added together give a palindrome (10301).

The spelling of 89881313 in words is "eighty-nine million, eight hundred eighty-one thousand, three hundred thirteen".