98992881 has 32 divisors (see below), whose sum is σ = 159152000. Its totient is φ = 60450624.

The previous prime is 98992877. The next prime is 98992903. The reversal of 98992881 is 18829989.

It is a happy number.

It is not a de Polignac number, because 98992881 - 2² = 98992877 is a prime.

It is a super-2 number, since 2×98992881² = 19599180977360322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (98992801) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47775 + ... + 49803.

It is an arithmetic number, because the mean of its divisors is an integer number (4973500).

Almost surely, 2^98992881 is an apocalyptic number.

It is an amenable number.

98992881 is a deficient number, since it is larger than the sum of its proper divisors (60159119).

98992881 is a wasteful number, since it uses less digits than its factorization.

98992881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190 (or 2184 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 98992881 is about 9949.5166214244. The cubic root of 98992881 is about 462.5954121148.

The spelling of 98992881 in words is "ninety-eight million, nine hundred ninety-two thousand, eight hundred eighty-one".