117569217 has 4 divisors (see below), whose sum is σ = 156758960. Its totient is φ = 78379476.

The previous prime is 117569209. The next prime is 117569273. The reversal of 117569217 is 712965711.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 117569217 - 2³ = 117569209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117569717) 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, 19594867 + ... + 19594872.

It is an arithmetic number, because the mean of its divisors is an integer number (39189740).

Almost surely, 2^117569217 is an apocalyptic number.

It is an amenable number.

117569217 is a deficient number, since it is larger than the sum of its proper divisors (39189743).

117569217 is an equidigital number, since it uses as much as digits as its factorization.

117569217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39189742.

The product of its digits is 26460, while the sum is 39.

The square root of 117569217 is about 10842.9339664133. The cubic root of 117569217 is about 489.8892113819.

The spelling of 117569217 in words is "one hundred seventeen million, five hundred sixty-nine thousand, two hundred seventeen".