117906249 has 16 divisors (see below), whose sum is σ = 160266240. Its totient is φ = 77082000.

The previous prime is 117906223. The next prime is 117906251. The reversal of 117906249 is 942609711.

It is not a de Polignac number, because 117906249 - 2⁸ = 117905993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (117906449) 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 15 ways as a sum of consecutive naturals, for example, 132484 + ... + 133370.

It is an arithmetic number, because the mean of its divisors is an integer number (10016640).

Almost surely, 2^117906249 is an apocalyptic number.

It is an amenable number.

117906249 is a deficient number, since it is larger than the sum of its proper divisors (42359991).

117906249 is an equidigital number, since it uses as much as digits as its factorization.

117906249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1700.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 117906249 is about 10858.4643941950. The cubic root of 117906249 is about 490.3568814784.

The spelling of 117906249 in words is "one hundred seventeen million, nine hundred six thousand, two hundred forty-nine".