391056896 has 40 divisors (see below), whose sum is σ = 796147704. Its totient is φ = 191825920.

The previous prime is 391056871. The next prime is 391056937. The reversal of 391056896 is 698650193.

It is a self number, because there is not a number n which added to its sum of digits gives 391056896.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19931 + ... + 34341.

Almost surely, 2^391056896 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 391056896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (398073852).

391056896 is an abundant number, since it is smaller than the sum of its proper divisors (405090808).

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

391056896 is an equidigital number, since it uses as much as digits as its factorization.

391056896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14482 (or 14466 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 391056896 is about 19775.1585581507. The cubic root of 391056896 is about 731.2737479224.

It can be divided in two parts, 3910 and 56896, that added together give a palindrome (60806).

The spelling of 391056896 in words is "three hundred ninety-one million, fifty-six thousand, eight hundred ninety-six".