98905081 has 4 divisors (see below), whose sum is σ = 107896464. Its totient is φ = 89913700.

The previous prime is 98905073. The next prime is 98905091. The reversal of 98905081 is 18050989.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 98905081 - 2³ = 98905073 is a prime.

It is a super-2 number, since 2×98905081² = 19564430095233122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a pancake number, because a pancake can be divided into 98905081 parts by 14064 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98905091) 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 in 3 ways as a sum of consecutive naturals, for example, 4495675 + ... + 4495696.

It is an arithmetic number, because the mean of its divisors is an integer number (26974116).

Almost surely, 2^98905081 is an apocalyptic number.

It is an amenable number.

98905081 is a deficient number, since it is larger than the sum of its proper divisors (8991383).

98905081 is a wasteful number, since it uses less digits than its factorization.

98905081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8991382.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 98905081 is about 9945.1033679897. The cubic root of 98905081 is about 462.4586080317.

The spelling of 98905081 in words is "ninety-eight million, nine hundred five thousand, eighty-one".