117729997 has 12 divisors (see below), whose sum is σ = 149402016. Its totient is φ = 91737240.

The previous prime is 117729949. The next prime is 117730003. The reversal of 117729997 is 799927711.

It is not a de Polignac number, because 117729997 - 2¹¹ = 117727949 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 (117729497) 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 11 ways as a sum of consecutive naturals, for example, 108673 + ... + 109750.

It is an arithmetic number, because the mean of its divisors is an integer number (12450168).

Almost surely, 2^117729997 is an apocalyptic number.

It is an amenable number.

117729997 is a deficient number, since it is larger than the sum of its proper divisors (31672019).

117729997 is a wasteful number, since it uses less digits than its factorization.

117729997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218448 (or 218441 counting only the distinct ones).

The product of its digits is 500094, while the sum is 52.

The square root of 117729997 is about 10850.3454783707. The cubic root of 117729997 is about 490.1124231838.

The spelling of 117729997 in words is "one hundred seventeen million, seven hundred twenty-nine thousand, nine hundred ninety-seven".