396473856 has 80 divisors (see below), whose sum is σ = 1060646400. Its totient is φ = 131606528.

The previous prime is 396473851. The next prime is 396473873. The reversal of 396473856 is 658374693.

It is a junction number, because it is equal to n+sod(n) for n = 396473799 and 396473808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396473851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 551065 + ... + 551783.

It is an arithmetic number, because the mean of its divisors is an integer number (13258080).

Almost surely, 2^396473856 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 396473856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (530323200).

396473856 is an abundant number, since it is smaller than the sum of its proper divisors (664172544).

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

396473856 is an equidigital number, since it uses as much as digits as its factorization.

396473856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099 (or 1083 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 51.

The square root of 396473856 is about 19911.6512625146. The cubic root of 396473856 is about 734.6348354992.

The spelling of 396473856 in words is "three hundred ninety-six million, four hundred seventy-three thousand, eight hundred fifty-six".