117835921 has 8 divisors (see below), whose sum is σ = 136952640. Its totient is φ = 99289968.

The previous prime is 117835901. The next prime is 117835937. The reversal of 117835921 is 129538711.

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

It is a cyclic number.

It is not a de Polignac number, because 117835921 - 2⁵ = 117835889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (117835901) 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, 142246 + ... + 143071.

It is an arithmetic number, because the mean of its divisors is an integer number (17119080).

Almost surely, 2^117835921 is an apocalyptic number.

It is an amenable number.

117835921 is a deficient number, since it is larger than the sum of its proper divisors (19116719).

117835921 is an equidigital number, since it uses as much as digits as its factorization.

117835921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285383.

The product of its digits is 15120, while the sum is 37.

The square root of 117835921 is about 10855.2255158518. The cubic root of 117835921 is about 490.2593670606.

The spelling of 117835921 in words is "one hundred seventeen million, eight hundred thirty-five thousand, nine hundred twenty-one".