89281001 has 2 divisors, whose sum is σ = 89281002. Its totient is φ = 89281000.

The previous prime is 89280979. The next prime is 89281007. The reversal of 89281001 is 10018298.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88811776 + 469225 = 9424^2 + 685^2 .

It is a cyclic number.

It is not a de Polignac number, because 89281001 - 2²² = 85086697 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (89281007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44640500 + 44640501.

It is an arithmetic number, because the mean of its divisors is an integer number (44640501).

Almost surely, 2^89281001 is an apocalyptic number.

It is an amenable number.

89281001 is a deficient number, since it is larger than the sum of its proper divisors (1).

89281001 is an equidigital number, since it uses as much as digits as its factorization.

89281001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 89281001 is about 9448.8624183020. The cubic root of 89281001 is about 446.9439027274.

Adding to 89281001 its reverse (10018298), we get a palindrome (99299299).

The spelling of 89281001 in words is "eighty-nine million, two hundred eighty-one thousand, one".