108991941 has 8 divisors (see below), whose sum is σ = 145387104. Its totient is φ = 72629040.

The previous prime is 108991931. The next prime is 108991943. The reversal of 108991941 is 149199801.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-108991941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 108991893 and 108991902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108991943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1411 + ... + 14831.

It is an arithmetic number, because the mean of its divisors is an integer number (18173388).

Almost surely, 2^108991941 is an apocalyptic number.

It is an amenable number.

108991941 is a deficient number, since it is larger than the sum of its proper divisors (36395163).

108991941 is a wasteful number, since it uses less digits than its factorization.

108991941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16131.

The product of its (nonzero) digits is 23328, while the sum is 42.

The square root of 108991941 is about 10439.9205456747. The cubic root of 108991941 is about 477.6738451271.

The spelling of 108991941 in words is "one hundred eight million, nine hundred ninety-one thousand, nine hundred forty-one".