396891287052 has 96 divisors (see below), whose sum is σ = 1051030149120. Its totient is φ = 115558202880.

The previous prime is 396891286993. The next prime is 396891287069. The reversal of 396891287052 is 250782198693.

396891287052 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2480352 + ... + 2635512.

It is an arithmetic number, because the mean of its divisors is an integer number (10948230720).

Almost surely, 2^396891287052 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 396891287052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525515074560).

396891287052 is an abundant number, since it is smaller than the sum of its proper divisors (654138862068).

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

396891287052 is a wasteful number, since it uses less digits than its factorization.

396891287052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156063 (or 156061 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 396891287052 in words is "three hundred ninety-six billion, eight hundred ninety-one million, two hundred eighty-seven thousand, fifty-two".