990098 has 8 divisors (see below), whose sum is σ = 1496880. Its totient is φ = 491140.

The previous prime is 990053. The next prime is 990137. The reversal of 990098 is 890099.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1628 + ... + 2151.

It is an arithmetic number, because the mean of its divisors is an integer number (187110).

2⁹⁹⁰⁰⁹⁸ is an apocalyptic number.

990098 is a deficient number, since it is larger than the sum of its proper divisors (506782).

990098 is a wasteful number, since it uses less digits than its factorization.

990098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3912.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 990098 is about 995.0366827409. The cubic root of 990098 is about 99.6688378603.

Subtracting from 990098 its reverse (890099), we obtain a palindrome (99999).

The spelling of 990098 in words is "nine hundred ninety thousand, ninety-eight".