89988061 has 2 divisors, whose sum is σ = 89988062. Its totient is φ = 89988060.

The previous prime is 89988037. The next prime is 89988079. The reversal of 89988061 is 16088998.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57668836 + 32319225 = 7594^2 + 5685^2 .

It is a cyclic number.

It is not a de Polignac number, because 89988061 - 2¹⁵ = 89955293 is a prime.

It is a super-2 number, since 2×89988061² = 16195702245079442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 89987996 and 89988014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89988001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44994030 + 44994031.

It is an arithmetic number, because the mean of its divisors is an integer number (44994031).

Almost surely, 2^89988061 is an apocalyptic number.

It is an amenable number.

89988061 is a deficient number, since it is larger than the sum of its proper divisors (1).

89988061 is an equidigital number, since it uses as much as digits as its factorization.

89988061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 248832, while the sum is 49.

The square root of 89988061 is about 9486.2037190859. The cubic root of 89988061 is about 448.1206576715.

The spelling of 89988061 in words is "eighty-nine million, nine hundred eighty-eight thousand, sixty-one".