108941921 has 4 divisors (see below), whose sum is σ = 118845744. Its totient is φ = 99038100.

The previous prime is 108941887. The next prime is 108941939. The reversal of 108941921 is 129149801.

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 a cyclic number.

It is not a de Polignac number, because 108941921 - 2¹⁸ = 108679777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108941821) 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, 4951895 + ... + 4951916.

It is an arithmetic number, because the mean of its divisors is an integer number (29711436).

Almost surely, 2^108941921 is an apocalyptic number.

108941921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

108941921 is a deficient number, since it is larger than the sum of its proper divisors (9903823).

108941921 is an equidigital number, since it uses as much as digits as its factorization.

108941921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903822.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 108941921 is about 10437.5246586535. The cubic root of 108941921 is about 477.6007605132.

The spelling of 108941921 in words is "one hundred eight million, nine hundred forty-one thousand, nine hundred twenty-one".