117747091 has 16 divisors (see below), whose sum is σ = 147080448. Its totient is φ = 91576800.

The previous prime is 117747059. The next prime is 117747109. The reversal of 117747091 is 190747711.

It is not a de Polignac number, because 117747091 - 2⁵ = 117747059 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 117747091.

It is not an unprimeable number, because it can be changed into a prime (117747011) 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, 52101 + ... + 54313.

It is an arithmetic number, because the mean of its divisors is an integer number (9192528).

Almost surely, 2^117747091 is an apocalyptic number.

117747091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117747091 is a deficient number, since it is larger than the sum of its proper divisors (29333357).

117747091 is a wasteful number, since it uses less digits than its factorization.

117747091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2922.

The product of its (nonzero) digits is 12348, while the sum is 37.

The square root of 117747091 is about 10851.1331666329. The cubic root of 117747091 is about 490.1361429282.

The spelling of 117747091 in words is "one hundred seventeen million, seven hundred forty-seven thousand, ninety-one".