100959109 has 4 divisors (see below), whose sum is σ = 101352204. Its totient is φ = 100566016.

The previous prime is 100959091. The next prime is 100959113. The reversal of 100959109 is 901959001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901959001 = 523 ⋅1724587.

It can be written as a sum of positive squares in 2 ways, for example, as 99700225 + 1258884 = 9985^2 + 1122^2 .

It is a cyclic number.

It is not a de Polignac number, because 100959109 - 2⁷ = 100958981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100959119) 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, 196162 + ... + 196675.

It is an arithmetic number, because the mean of its divisors is an integer number (25338051).

Almost surely, 2^100959109 is an apocalyptic number.

It is an amenable number.

100959109 is a deficient number, since it is larger than the sum of its proper divisors (393095).

100959109 is an equidigital number, since it uses as much as digits as its factorization.

100959109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393094.

The product of its (nonzero) digits is 3645, while the sum is 34.

The square root of 100959109 is about 10047.8410118791. The cubic root of 100959109 is about 465.6380941861.

The spelling of 100959109 in words is "one hundred million, nine hundred fifty-nine thousand, one hundred nine".