100409117 has 4 divisors (see below), whose sum is σ = 100433340. Its totient is φ = 100384896.

The previous prime is 100409087. The next prime is 100409119. The reversal of 100409117 is 711904001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 711904001 = 43 ⋅16555907.

It can be written as a sum of positive squares in 2 ways, for example, as 44368921 + 56040196 = 6661^2 + 7486^2 .

It is a cyclic number.

It is not a de Polignac number, because 100409117 - 2¹⁰ = 100408093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100409092 and 100409101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100409119) 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, 4148 + ... + 14765.

It is an arithmetic number, because the mean of its divisors is an integer number (25108335).

Almost surely, 2^100409117 is an apocalyptic number.

It is an amenable number.

100409117 is a deficient number, since it is larger than the sum of its proper divisors (24223).

100409117 is an equidigital number, since it uses as much as digits as its factorization.

100409117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24222.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 100409117 is about 10020.4349705988. The cubic root of 100409117 is about 464.7910064021.

The spelling of 100409117 in words is "one hundred million, four hundred nine thousand, one hundred seventeen".