89281161 has 12 divisors (see below), whose sum is σ = 136547892. Its totient is φ = 56019456.

The previous prime is 89281141. The next prime is 89281183. The reversal of 89281161 is 16118298.

It can be written as a sum of positive squares in 2 ways, for example, as 31809600 + 57471561 = 5640^2 + 7581^2 .

It is not a de Polignac number, because 89281161 - 2¹³ = 89272969 is a prime.

It is a super-2 number, since 2×89281161² = 15942251419015842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89281141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 291616 + ... + 291921.

It is an arithmetic number, because the mean of its divisors is an integer number (11378991).

Almost surely, 2^89281161 is an apocalyptic number.

It is an amenable number.

89281161 is a deficient number, since it is larger than the sum of its proper divisors (47266731).

89281161 is a wasteful number, since it uses less digits than its factorization.

89281161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583560 (or 583557 counting only the distinct ones).

The product of its digits is 6912, while the sum is 36.

The square root of 89281161 is about 9448.8708849259. The cubic root of 89281161 is about 446.9441697158.

The spelling of 89281161 in words is "eighty-nine million, two hundred eighty-one thousand, one hundred sixty-one".