117017791 has 16 divisors (see below), whose sum is σ = 131760288. Its totient is φ = 102988800.

The previous prime is 117017779. The next prime is 117017801. The reversal of 117017791 is 197710711.

It is a cyclic number.

It is not a de Polignac number, because 117017791 - 2⁹ = 117017279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (117017701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97491 + ... + 98683.

It is an arithmetic number, because the mean of its divisors is an integer number (8235018).

Almost surely, 2^117017791 is an apocalyptic number.

117017791 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

117017791 is a deficient number, since it is larger than the sum of its proper divisors (14742497).

117017791 is a wasteful number, since it uses less digits than its factorization.

117017791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1482.

The product of its (nonzero) digits is 3087, while the sum is 34.

The square root of 117017791 is about 10817.4761843972. The cubic root of 117017791 is about 489.1221140796.

The spelling of 117017791 in words is "one hundred seventeen million, seventeen thousand, seven hundred ninety-one".