89320961 has 2 divisors, whose sum is σ = 89320962. Its totient is φ = 89320960.

The previous prime is 89320949. The next prime is 89320969. The reversal of 89320961 is 16902398.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66520336 + 22800625 = 8156^2 + 4775^2 .

It is a cyclic number.

It is not a de Polignac number, because 89320961 - 2¹⁴ = 89304577 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89320969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44660480 + 44660481.

It is an arithmetic number, because the mean of its divisors is an integer number (44660481).

Almost surely, 2^89320961 is an apocalyptic number.

It is an amenable number.

89320961 is a deficient number, since it is larger than the sum of its proper divisors (1).

89320961 is an equidigital number, since it uses as much as digits as its factorization.

89320961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 89320961 is about 9450.9767220113. The cubic root of 89320961 is about 447.0105731809.

The spelling of 89320961 in words is "eighty-nine million, three hundred twenty thousand, nine hundred sixty-one".