99281998 has 8 divisors (see below), whose sum is σ = 151020720. Its totient is φ = 48941760.

The previous prime is 99281981. The next prime is 99282019. The reversal of 99281998 is 89918299.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 349443 + ... + 349726.

It is an arithmetic number, because the mean of its divisors is an integer number (18877590).

Almost surely, 2^99281998 is an apocalyptic number.

99281998 is a deficient number, since it is larger than the sum of its proper divisors (51738722).

99281998 is a wasteful number, since it uses less digits than its factorization.

99281998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699242.

The product of its digits is 839808, while the sum is 55.

The square root of 99281998 is about 9964.0352267543. The cubic root of 99281998 is about 463.0453239454.

The spelling of 99281998 in words is "ninety-nine million, two hundred eighty-one thousand, nine hundred ninety-eight".