391616017 has 8 divisors (see below), whose sum is σ = 422452800. Its totient is φ = 360881040.

The previous prime is 391616003. The next prime is 391616023. The reversal of 391616017 is 710616193.

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

It is not a de Polignac number, because 391616017 - 2¹¹ = 391613969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (391616047) 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, 17359 + ... + 32932.

It is an arithmetic number, because the mean of its divisors is an integer number (52806600).

Almost surely, 2^391616017 is an apocalyptic number.

It is an amenable number.

391616017 is a deficient number, since it is larger than the sum of its proper divisors (30836783).

391616017 is a wasteful number, since it uses less digits than its factorization.

391616017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50903.

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 391616017 is about 19789.2904622677. The cubic root of 391616017 is about 731.6220994492.

The spelling of 391616017 in words is "three hundred ninety-one million, six hundred sixteen thousand, seventeen".