98991924 has 12 divisors (see below), whose sum is σ = 230981184. Its totient is φ = 32997304.

The previous prime is 98991887. The next prime is 98991967. The reversal of 98991924 is 42919989.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

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, 4124652 + ... + 4124675.

It is an arithmetic number, because the mean of its divisors is an integer number (19248432).

Almost surely, 2^98991924 is an apocalyptic number.

It is an amenable number.

98991924 is an abundant number, since it is smaller than the sum of its proper divisors (131989260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98991924 is a wasteful number, since it uses less digits than its factorization.

98991924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8249334 (or 8249332 counting only the distinct ones).

The product of its digits is 419904, while the sum is 51.

The square root of 98991924 is about 9949.4685285195. The cubic root of 98991924 is about 462.5939214176.

The spelling of 98991924 in words is "ninety-eight million, nine hundred ninety-one thousand, nine hundred twenty-four".