89520961 has 2 divisors, whose sum is σ = 89520962. Its totient is φ = 89520960.

The previous prime is 89520923. The next prime is 89520979. The reversal of 89520961 is 16902598.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75690000 + 13830961 = 8700^2 + 3719^2 .

It is a cyclic number.

It is not a de Polignac number, because 89520961 - 2⁷ = 89520833 is a prime.

It is not a weakly prime, because it can be changed into another prime (89520161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44760480 + 44760481.

It is an arithmetic number, because the mean of its divisors is an integer number (44760481).

Almost surely, 2^89520961 is an apocalyptic number.

It is an amenable number.

89520961 is a deficient number, since it is larger than the sum of its proper divisors (1).

89520961 is an equidigital number, since it uses as much as digits as its factorization.

89520961 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 89520961 is about 9461.5517226299. The cubic root of 89520961 is about 447.3439606608.

The spelling of 89520961 in words is "eighty-nine million, five hundred twenty thousand, nine hundred sixty-one".