108990445 has 8 divisors (see below), whose sum is σ = 136475136. Its totient is φ = 83401296.

The previous prime is 108990443. The next prime is 108990457. The reversal of 108990445 is 544099801.

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

It is a cyclic number.

It is not a de Polignac number, because 108990445 - 2¹ = 108990443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 108990398 and 108990407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108990443) 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 7 ways as a sum of consecutive naturals, for example, 473757 + ... + 473986.

It is an arithmetic number, because the mean of its divisors is an integer number (17059392).

Almost surely, 2^108990445 is an apocalyptic number.

It is an amenable number.

108990445 is a deficient number, since it is larger than the sum of its proper divisors (27484691).

108990445 is an equidigital number, since it uses as much as digits as its factorization.

108990445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947771.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 108990445 is about 10439.8488973739. The cubic root of 108990445 is about 477.6716596342.

The spelling of 108990445 in words is "one hundred eight million, nine hundred ninety thousand, four hundred forty-five".