108911001 has 4 divisors (see below), whose sum is σ = 145214672. Its totient is φ = 72607332.

The previous prime is 108910981. The next prime is 108911039. The reversal of 108911001 is 100119801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 108911001 - 2⁵ = 108910969 is a prime.

It is a super-2 number, since 2×108911001² = 23723212277644002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108911041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18151831 + ... + 18151836.

It is an arithmetic number, because the mean of its divisors is an integer number (36303668).

Almost surely, 2^108911001 is an apocalyptic number.

It is an amenable number.

108911001 is a deficient number, since it is larger than the sum of its proper divisors (36303671).

108911001 is an equidigital number, since it uses as much as digits as its factorization.

108911001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36303670.

The product of its (nonzero) digits is 72, while the sum is 21.

The square root of 108911001 is about 10436.0433594346. The cubic root of 108911001 is about 477.5555718698. Note that the first 4 decimals are identical.

It can be divided in two parts, 1089 and 11001, that added together give a triangular number (12090 = T₁₅₅).

The spelling of 108911001 in words is "one hundred eight million, nine hundred eleven thousand, one".