98588981 has 4 divisors (see below), whose sum is σ = 100881792. Its totient is φ = 96296172.

The previous prime is 98588953. The next prime is 98589011. The reversal of 98588981 is 18988589.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18988589 = 863 ⋅22003.

It is a cyclic number.

It is not a de Polignac number, because 98588981 - 2²⁶ = 31480117 is a prime.

It is a super-2 number, since 2×98588981² = 19439574349236722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98588921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1146341 + ... + 1146426.

It is an arithmetic number, because the mean of its divisors is an integer number (25220448).

Almost surely, 2^98588981 is an apocalyptic number.

It is an amenable number.

98588981 is a deficient number, since it is larger than the sum of its proper divisors (2292811).

98588981 is a wasteful number, since it uses less digits than its factorization.

98588981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2292810.

The product of its digits is 1658880, while the sum is 56.

The square root of 98588981 is about 9929.1984067194. The cubic root of 98588981 is about 461.9654106648.

The spelling of 98588981 in words is "ninety-eight million, five hundred eighty-eight thousand, nine hundred eighty-one".