391842016 has 48 divisors (see below), whose sum is σ = 814257360. Its totient is φ = 185103360.

The previous prime is 391841987. The next prime is 391842019. The reversal of 391842016 is 610248193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391842019) by changing a digit.

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, 316150 + ... + 317386.

It is an arithmetic number, because the mean of its divisors is an integer number (16963695).

Almost surely, 2^391842016 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 391842016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407128680).

391842016 is an abundant number, since it is smaller than the sum of its proper divisors (422415344).

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

391842016 is a wasteful number, since it uses less digits than its factorization.

391842016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1787 (or 1779 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 391842016 is about 19794.9997726699. Note that the first 3 decimals coincide. The cubic root of 391842016 is about 731.7628104681.

The spelling of 391842016 in words is "three hundred ninety-one million, eight hundred forty-two thousand, sixteen".