90898 has 8 divisors (see below), whose sum is σ = 139392. Its totient is φ = 44436.

The previous prime is 90887. The next prime is 90901. The reversal of 90898 is 89809.

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 (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390 + ... + 577.

It is an arithmetic number, because the mean of its divisors is an integer number (17424).

2⁹⁰⁸⁹⁸ is an apocalyptic number.

90898 is a deficient number, since it is larger than the sum of its proper divisors (48494).

90898 is a wasteful number, since it uses less digits than its factorization.

90898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 90898 is about 301.4929518247. The cubic root of 90898 is about 44.9626026744.

Subtracting from 90898 its reverse (89809), we obtain a square (1089 = 33²).

The spelling of 90898 in words is "ninety thousand, eight hundred ninety-eight".