89461181 has 2 divisors, whose sum is σ = 89461182. Its totient is φ = 89461180.

The previous prime is 89461159. The next prime is 89461189. The reversal of 89461181 is 18116498.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73188025 + 16273156 = 8555^2 + 4034^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89461181 is a prime.

It is a super-2 number, since 2×89461181² = 16006605811829522, which contains 22 as substring.

It is a Chen prime.

It is equal to p_5187737 and since 89461181 and 5187737 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89461189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44730590 + 44730591.

It is an arithmetic number, because the mean of its divisors is an integer number (44730591).

Almost surely, 2^89461181 is an apocalyptic number.

It is an amenable number.

89461181 is a deficient number, since it is larger than the sum of its proper divisors (1).

89461181 is an equidigital number, since it uses as much as digits as its factorization.

89461181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 38.

The square root of 89461181 is about 9458.3920937969. The cubic root of 89461181 is about 447.2443632165.

The spelling of 89461181 in words is "eighty-nine million, four hundred sixty-one thousand, one hundred eighty-one".