117491 has 6 divisors (see below), whose sum is σ = 129276. Its totient is φ = 106700.

The previous prime is 117443. The next prime is 117497. The reversal of 117491 is 194711.

It is not a de Polignac number, because 117491 - 2⁶ = 117427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117497) 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 5 ways as a sum of consecutive naturals, for example, 365 + ... + 606.

It is an arithmetic number, because the mean of its divisors is an integer number (21546).

2¹¹⁷⁴⁹¹ is an apocalyptic number.

117491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117491 is a deficient number, since it is larger than the sum of its proper divisors (11785).

117491 is an equidigital number, since it uses as much as digits as its factorization.

117491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 982 counting only the distinct ones).

The product of its digits is 252, while the sum is 23.

The square root of 117491 is about 342.7696019194. The cubic root of 117491 is about 48.9780548684.

The spelling of 117491 in words is "one hundred seventeen thousand, four hundred ninety-one".