108090889 has 4 divisors (see below), whose sum is σ = 108779524. Its totient is φ = 107402256.

The previous prime is 108090877. The next prime is 108090953. The reversal of 108090889 is 988090801.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45158400 + 62932489 = 6720^2 + 7933^2 .

It is a cyclic number.

It is not a de Polignac number, because 108090889 - 2⁹ = 108090377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108096889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344082 + ... + 344395.

It is an arithmetic number, because the mean of its divisors is an integer number (27194881).

Almost surely, 2^108090889 is an apocalyptic number.

It is an amenable number.

108090889 is a deficient number, since it is larger than the sum of its proper divisors (688635).

108090889 is an equidigital number, since it uses as much as digits as its factorization.

108090889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688634.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 108090889 is about 10396.6768248321. The cubic root of 108090889 is about 476.3538682203.

The spelling of 108090889 in words is "one hundred eight million, ninety thousand, eight hundred eighty-nine".