100990117 has 4 divisors (see below), whose sum is σ = 101078860. Its totient is φ = 100901376.

The previous prime is 100990091. The next prime is 100990133. The reversal of 100990117 is 711099001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54081316 + 46908801 = 7354^2 + 6849^2 .

It is a cyclic number.

It is not a de Polignac number, because 100990117 - 2⁷ = 100989989 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 (100990517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42642 + ... + 44947.

It is an arithmetic number, because the mean of its divisors is an integer number (25269715).

Almost surely, 2^100990117 is an apocalyptic number.

It is an amenable number.

100990117 is a deficient number, since it is larger than the sum of its proper divisors (88743).

100990117 is an equidigital number, since it uses as much as digits as its factorization.

100990117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88742.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 100990117 is about 10049.3839114644. The cubic root of 100990117 is about 465.6857604417.

The spelling of 100990117 in words is "one hundred million, nine hundred ninety thousand, one hundred seventeen".