109898 has 4 divisors (see below), whose sum is σ = 164850. Its totient is φ = 54948.

The previous prime is 109897. The next prime is 109903. The reversal of 109898 is 898901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 898901 = 383 ⋅2347.

It can be written as a sum of positive squares in only one way, i.e., 100489 + 9409 = 317^2 + 97^2 .

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (109891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27473 + ... + 27476.

2¹⁰⁹⁸⁹⁸ is an apocalyptic number.

109898 is a deficient number, since it is larger than the sum of its proper divisors (54952).

109898 is an equidigital number, since it uses as much as digits as its factorization.

109898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54951.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 109898 is about 331.5086725864. The cubic root of 109898 is about 47.8993841475.

The spelling of 109898 in words is "one hundred nine thousand, eight hundred ninety-eight".