89800001 has 12 divisors (see below), whose sum is σ = 96744492. Its totient is φ = 83049984.

The previous prime is 89799989. The next prime is 89800063. The reversal of 89800001 is 10000898.

It can be written as a sum of positive squares in 6 ways, for example, as 10233601 + 79566400 = 3199^2 + 8920^2 .

It is not a de Polignac number, because 89800001 - 2¹⁰ = 89798977 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89802001) 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 in 11 ways as a sum of consecutive naturals, for example, 333695 + ... + 333963.

It is an arithmetic number, because the mean of its divisors is an integer number (8062041).

Almost surely, 2^89800001 is an apocalyptic number.

It is an amenable number.

89800001 is a deficient number, since it is larger than the sum of its proper divisors (6944491).

89800001 is an equidigital number, since it uses as much as digits as its factorization.

89800001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 89800001 is about 9476.2862451490. The cubic root of 89800001 is about 447.8082742135.

Adding to 89800001 its reverse (10000898), we get a palindrome (99800899).

The spelling of 89800001 in words is "eighty-nine million, eight hundred thousand, one".