89849321 has 2 divisors, whose sum is σ = 89849322. Its totient is φ = 89849320.

The previous prime is 89849303. The next prime is 89849323. The reversal of 89849321 is 12394898.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56625625 + 33223696 = 7525^2 + 5764^2 .

It is a cyclic number.

It is not a de Polignac number, because 89849321 - 2²⁶ = 22740457 is a prime.

It is a super-2 number, since 2×89849321² = 16145800968322082, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 89849323, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89849323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44924660 + 44924661.

It is an arithmetic number, because the mean of its divisors is an integer number (44924661).

Almost surely, 2^89849321 is an apocalyptic number.

It is an amenable number.

89849321 is a deficient number, since it is larger than the sum of its proper divisors (1).

89849321 is an equidigital number, since it uses as much as digits as its factorization.

89849321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 89849321 is about 9478.8881731984. Note that the first 3 decimals coincide. The cubic root of 89849321 is about 447.8902410351.

The spelling of 89849321 in words is "eighty-nine million, eight hundred forty-nine thousand, three hundred twenty-one".