391199168 has 56 divisors (see below), whose sum is σ = 805403520. Its totient is φ = 188328960.

The previous prime is 391199141. The next prime is 391199197. The reversal of 391199168 is 861991193.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 533330 + ... + 534062.

Almost surely, 2^391199168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 391199168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402701760).

391199168 is an abundant number, since it is smaller than the sum of its proper divisors (414204352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

391199168 is a wasteful number, since it uses less digits than its factorization.

391199168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045 (or 1035 counting only the distinct ones).

The product of its digits is 104976, while the sum is 47.

The square root of 391199168 is about 19778.7554714648. The cubic root of 391199168 is about 731.3624197288.

The spelling of 391199168 in words is "three hundred ninety-one million, one hundred ninety-nine thousand, one hundred sixty-eight".