105079891 has 8 divisors (see below), whose sum is σ = 120155904. Its totient is φ = 90020040.

The previous prime is 105079841. The next prime is 105079901. The reversal of 105079891 is 198970501.

It is a happy number.

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 105079891 - 2⁷ = 105079763 is a prime.

It is a super-2 number, since 2×105079891² = 22083566985143762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105079841) 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, 17736 + ... + 22906.

It is an arithmetic number, because the mean of its divisors is an integer number (15019488).

Almost surely, 2^105079891 is an apocalyptic number.

105079891 is a deficient number, since it is larger than the sum of its proper divisors (15076013).

105079891 is an equidigital number, since it uses as much as digits as its factorization.

105079891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8081.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 105079891 is about 10250.8483063598. The cubic root of 105079891 is about 471.8890189014.

The spelling of 105079891 in words is "one hundred five million, seventy-nine thousand, eight hundred ninety-one".