117992769 has 4 divisors (see below), whose sum is σ = 157323696. Its totient is φ = 78661844.

The previous prime is 117992753. The next prime is 117992803. The reversal of 117992769 is 967299711.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 117992769 - 2⁴ = 117992753 is a prime.

It is a super-2 number, since 2×117992769² = 27844587072574722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (117992269) 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 3 ways as a sum of consecutive naturals, for example, 19665459 + ... + 19665464.

It is an arithmetic number, because the mean of its divisors is an integer number (39330924).

Almost surely, 2^117992769 is an apocalyptic number.

It is an amenable number.

117992769 is a deficient number, since it is larger than the sum of its proper divisors (39330927).

117992769 is an equidigital number, since it uses as much as digits as its factorization.

117992769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39330926.

The product of its digits is 428652, while the sum is 51.

The square root of 117992769 is about 10862.4476523480. The cubic root of 117992769 is about 490.4767939925.

The spelling of 117992769 in words is "one hundred seventeen million, nine hundred ninety-two thousand, seven hundred sixty-nine".