99121982 has 8 divisors (see below), whose sum is σ = 148759200. Its totient is φ = 49535584.

The previous prime is 99121961. The next prime is 99121991. The reversal of 99121982 is 28912199.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 7382 + ... + 15897.

It is an arithmetic number, because the mean of its divisors is an integer number (18594900).

Almost surely, 2^99121982 is an apocalyptic number.

99121982 is a deficient number, since it is larger than the sum of its proper divisors (49637218).

99121982 is a wasteful number, since it uses less digits than its factorization.

99121982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25410.

The product of its digits is 23328, while the sum is 41.

The square root of 99121982 is about 9956.0023101645. The cubic root of 99121982 is about 462.7964218126.

The spelling of 99121982 in words is "ninety-nine million, one hundred twenty-one thousand, nine hundred eighty-two".