98493981 has 24 divisors (see below), whose sum is σ = 139993056. Its totient is φ = 61570080.

The previous prime is 98493973. The next prime is 98494031. The reversal of 98493981 is 18939489.

It is a happy number.

It is not a de Polignac number, because 98493981 - 2³ = 98493973 is a prime.

It is a super-2 number, since 2×98493981² = 19402128586456722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98443981) 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 23 ways as a sum of consecutive naturals, for example, 83526 + ... + 84696.

It is an arithmetic number, because the mean of its divisors is an integer number (5833044).

Almost surely, 2^98493981 is an apocalyptic number.

It is an amenable number.

98493981 is a deficient number, since it is larger than the sum of its proper divisors (41499075).

98493981 is a wasteful number, since it uses less digits than its factorization.

98493981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273 (or 1250 counting only the distinct ones).

The product of its digits is 559872, while the sum is 51.

The square root of 98493981 is about 9924.4133831678. The cubic root of 98493981 is about 461.8169802233.

The spelling of 98493981 in words is "ninety-eight million, four hundred ninety-three thousand, nine hundred eighty-one".