108240889 has 4 divisors (see below), whose sum is σ = 108262756. Its totient is φ = 108219024.

The previous prime is 108240857. The next prime is 108240911. The reversal of 108240889 is 988042801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988042801 = 53 ⋅18642317.

It can be written as a sum of positive squares in 2 ways, for example, as 54834025 + 53406864 = 7405^2 + 7308^2 .

It is a cyclic number.

It is not a de Polignac number, because 108240889 - 2⁵ = 108240857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108240289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427 + ... + 14719.

It is an arithmetic number, because the mean of its divisors is an integer number (27065689).

Almost surely, 2^108240889 is an apocalyptic number.

It is an amenable number.

108240889 is a deficient number, since it is larger than the sum of its proper divisors (21867).

108240889 is an equidigital number, since it uses as much as digits as its factorization.

108240889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21866.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 108240889 is about 10403.8881674113. Note that the first 3 decimals coincide. The cubic root of 108240889 is about 476.5741151318.

The spelling of 108240889 in words is "one hundred eight million, two hundred forty thousand, eight hundred eighty-nine".