391766016 has 112 divisors (see below), whose sum is σ = 1100937600. Its totient is φ = 123568128.

The previous prime is 391765987. The next prime is 391766041. The reversal of 391766016 is 610667193.

It is a super-2 number, since 2×391766016² = 306961222585024512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 466525 + ... + 467363.

It is an arithmetic number, because the mean of its divisors is an integer number (9829800).

Almost surely, 2^391766016 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 391766016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550468800).

391766016 is an abundant number, since it is smaller than the sum of its proper divisors (709171584).

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

391766016 is an equidigital number, since it uses as much as digits as its factorization.

391766016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 391766016 is about 19793.0800028697. The cubic root of 391766016 is about 731.7154975484.

The spelling of 391766016 in words is "three hundred ninety-one million, seven hundred sixty-six thousand, sixteen".