117101809 has 16 divisors (see below), whose sum is σ = 133954560. Its totient is φ = 101329360.

The previous prime is 117101759. The next prime is 117101813. The reversal of 117101809 is 908101711.

It is not a de Polignac number, because 117101809 - 2¹³ = 117093617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117101869) 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 15 ways as a sum of consecutive naturals, for example, 56412 + ... + 58450.

It is an arithmetic number, because the mean of its divisors is an integer number (8372160).

Almost surely, 2^117101809 is an apocalyptic number.

It is an amenable number.

117101809 is a deficient number, since it is larger than the sum of its proper divisors (16852751).

117101809 is a wasteful number, since it uses less digits than its factorization.

117101809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 117101809 is about 10821.3589257542. The cubic root of 117101809 is about 489.2391482218.

It can be divided in two parts, 117 and 101809, that added together give a triangular number (101926 = T₄₅₁).

The spelling of 117101809 in words is "one hundred seventeen million, one hundred one thousand, eight hundred nine".