89209237 has 12 divisors (see below), whose sum is σ = 101399340. Its totient is φ = 78008832.

The previous prime is 89209231. The next prime is 89209247. The reversal of 89209237 is 73290298.

It can be written as a sum of positive squares in 2 ways, for example, as 43970161 + 45239076 = 6631^2 + 6726^2 .

It is not a de Polignac number, because 89209237 - 2¹¹ = 89207189 is a prime.

It is a super-2 number, since 2×89209237² = 15916575932244338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 89209237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89209231) 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, 4812 + ... + 14197.

It is an arithmetic number, because the mean of its divisors is an integer number (8449945).

Almost surely, 2^89209237 is an apocalyptic number.

It is an amenable number.

89209237 is a deficient number, since it is larger than the sum of its proper divisors (12190103).

89209237 is a wasteful number, since it uses less digits than its factorization.

89209237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19060 (or 19041 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 89209237 is about 9445.0641607138. The cubic root of 89209237 is about 446.8241195726.

The spelling of 89209237 in words is "eighty-nine million, two hundred nine thousand, two hundred thirty-seven".