90098 has 8 divisors (see below), whose sum is σ = 142320. Its totient is φ = 42660.

The previous prime is 90089. The next prime is 90107. The reversal of 90098 is 89009.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90089) and next prime (90107).

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

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, 1148 + ... + 1223.

It is an arithmetic number, because the mean of its divisors is an integer number (17790).

2⁹⁰⁰⁹⁸ is an apocalyptic number.

90098 is a deficient number, since it is larger than the sum of its proper divisors (52222).

90098 is a wasteful number, since it uses less digits than its factorization.

90098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 90098 is about 300.1632888946. The cubic root of 90098 is about 44.8303074047.

Subtracting from 90098 its reverse (89009), we obtain a square (1089 = 33²).

The spelling of 90098 in words is "ninety thousand, ninety-eight".