391167 has 18 divisors (see below), whose sum is σ = 658008. Its totient is φ = 223272.

The previous prime is 391163. The next prime is 391177. The reversal of 391167 is 761193.

It is not a de Polignac number, because 391167 - 2² = 391163 is a prime.

391167 is a lucky number.

It is a nialpdrome in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 391167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3 + ... + 884.

It is an arithmetic number, because the mean of its divisors is an integer number (36556).

2³⁹¹¹⁶⁷ is an apocalyptic number.

391167 is a deficient number, since it is larger than the sum of its proper divisors (266841).

391167 is a wasteful number, since it uses less digits than its factorization.

391167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907 (or 897 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 391167 is about 625.4334496971. The cubic root of 391167 is about 73.1342372727.

The spelling of 391167 in words is "three hundred ninety-one thousand, one hundred sixty-seven".