98881081 has 4 divisors (see below), whose sum is σ = 106487332. Its totient is φ = 91274832.

The previous prime is 98881051. The next prime is 98881087. The reversal of 98881081 is 18018889.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16362025 + 82519056 = 4045^2 + 9084^2 .

It is a cyclic number.

It is not a de Polignac number, because 98881081 - 2¹⁹ = 98356793 is a prime.

It is a super-2 number, since 2×98881081² = 19554936359457122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98881087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3803106 + ... + 3803131.

It is an arithmetic number, because the mean of its divisors is an integer number (26621833).

Almost surely, 2^98881081 is an apocalyptic number.

It is an amenable number.

98881081 is a deficient number, since it is larger than the sum of its proper divisors (7606251).

98881081 is a wasteful number, since it uses less digits than its factorization.

98881081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7606250.

The product of its (nonzero) digits is 36864, while the sum is 43.

The square root of 98881081 is about 9943.8966708228. The cubic root of 98881081 is about 462.4211987489.

The spelling of 98881081 in words is "ninety-eight million, eight hundred eighty-one thousand, eighty-one".