117939811 has 8 divisors (see below), whose sum is σ = 130291200. Its totient is φ = 105860040.

The previous prime is 117939793. The next prime is 117939823. The reversal of 117939811 is 118939711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-117939811 is a prime.

It is a Duffinian number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (117939851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66991 + ... + 68728.

It is an arithmetic number, because the mean of its divisors is an integer number (16286400).

Almost surely, 2^117939811 is an apocalyptic number.

117939811 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117939811 is a deficient number, since it is larger than the sum of its proper divisors (12351389).

117939811 is a wasteful number, since it uses less digits than its factorization.

117939811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135809.

The product of its digits is 13608, while the sum is 40.

The square root of 117939811 is about 10860.0097145445. The cubic root of 117939811 is about 490.4034037408.

The spelling of 117939811 in words is "one hundred seventeen million, nine hundred thirty-nine thousand, eight hundred eleven".