391962016 has 96 divisors (see below), whose sum is σ = 836559360. Its totient is φ = 180403200.

The previous prime is 391961981. The next prime is 391962019. The reversal of 391962016 is 610269193.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (391962019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2165446 + ... + 2165626.

It is an arithmetic number, because the mean of its divisors is an integer number (8714160).

Almost surely, 2^391962016 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 391962016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (418279680).

391962016 is an abundant number, since it is smaller than the sum of its proper divisors (444597344).

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

391962016 is a wasteful number, since it uses less digits than its factorization.

391962016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 391962016 is about 19798.0306091288. The cubic root of 391962016 is about 731.8375026240.

The spelling of 391962016 in words is "three hundred ninety-one million, nine hundred sixty-two thousand, sixteen".