89798181 has 32 divisors (see below), whose sum is σ = 136581120. Its totient is φ = 51979200.

The previous prime is 89798179. The next prime is 89798213. The reversal of 89798181 is 18189798.

It is not a de Polignac number, because 89798181 - 2¹ = 89798179 is a prime.

It is a super-2 number, since 2×89798181² = 16127426621817522, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89798101) 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 31 ways as a sum of consecutive naturals, for example, 98116 + ... + 99026.

It is an arithmetic number, because the mean of its divisors is an integer number (4268160).

Almost surely, 2^89798181 is an apocalyptic number.

It is an amenable number.

89798181 is a deficient number, since it is larger than the sum of its proper divisors (46782939).

89798181 is a wasteful number, since it uses less digits than its factorization.

89798181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057.

The product of its digits is 290304, while the sum is 51.

The square root of 89798181 is about 9476.1902154822. The cubic root of 89798181 is about 447.8052489108.

The spelling of 89798181 in words is "eighty-nine million, seven hundred ninety-eight thousand, one hundred eighty-one".