117417985 has 16 divisors (see below), whose sum is σ = 146276352. Its totient is φ = 90417600.

The previous prime is 117417959. The next prime is 117417991. The reversal of 117417985 is 589714711.

It is not a de Polignac number, because 117417985 - 2⁵ = 117417953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10240 + ... + 18430.

It is an arithmetic number, because the mean of its divisors is an integer number (9142272).

Almost surely, 2^117417985 is an apocalyptic number.

It is an amenable number.

117417985 is a deficient number, since it is larger than the sum of its proper divisors (28858367).

117417985 is an equidigital number, since it uses as much as digits as its factorization.

117417985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8304.

The product of its digits is 70560, while the sum is 43.

The square root of 117417985 is about 10835.9579641119. The cubic root of 117417985 is about 489.6790693158.

The spelling of 117417985 in words is "one hundred seventeen million, four hundred seventeen thousand, nine hundred eighty-five".