391496161 has 8 divisors (see below), whose sum is σ = 447797504. Its totient is φ = 335288160.

The previous prime is 391496081. The next prime is 391496173. The reversal of 391496161 is 161694193.

It is a happy number.

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 391496161 - 2⁹ = 391495649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (391496191) 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, 14100 + ... + 31333.

It is an arithmetic number, because the mean of its divisors is an integer number (55974688).

Almost surely, 2^391496161 is an apocalyptic number.

It is an amenable number.

391496161 is a deficient number, since it is larger than the sum of its proper divisors (56301343).

391496161 is a wasteful number, since it uses less digits than its factorization.

391496161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46671.

The product of its digits is 34992, while the sum is 40.

The square root of 391496161 is about 19786.2619258919. The cubic root of 391496161 is about 731.5474529911.

The spelling of 391496161 in words is "three hundred ninety-one million, four hundred ninety-six thousand, one hundred sixty-one".