117720969 has 16 divisors (see below), whose sum is σ = 164063232. Its totient is φ = 74941328.

The previous prime is 117720931. The next prime is 117721001. The reversal of 117720969 is 969027711.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 117720969 - 2¹⁵ = 117688201 is a prime.

It is a super-2 number, since 2×117720969² = 27716453084597922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 117720969.

It is not an unprimeable number, because it can be changed into a prime (117720269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56032 + ... + 58094.

It is an arithmetic number, because the mean of its divisors is an integer number (10253952).

Almost surely, 2^117720969 is an apocalyptic number.

It is an amenable number.

117720969 is a deficient number, since it is larger than the sum of its proper divisors (46342263).

117720969 is a wasteful number, since it uses less digits than its factorization.

117720969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2916.

The product of its (nonzero) digits is 47628, while the sum is 42.

The square root of 117720969 is about 10849.9294467752. The cubic root of 117720969 is about 490.0998949464.

The spelling of 117720969 in words is "one hundred seventeen million, seven hundred twenty thousand, nine hundred sixty-nine".