396709456 has 80 divisors (see below), whose sum is σ = 914316480. Its totient is φ = 164367360.

The previous prime is 396709441. The next prime is 396709457. The reversal of 396709456 is 654907693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (396709457) 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, 188860 + ... + 190948.

It is an arithmetic number, because the mean of its divisors is an integer number (11428956).

Almost surely, 2^396709456 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 396709456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457158240).

396709456 is an abundant number, since it is smaller than the sum of its proper divisors (517607024).

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

396709456 is a wasteful number, since it uses less digits than its factorization.

396709456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2204 (or 2198 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 49.

The square root of 396709456 is about 19917.5665180262. The cubic root of 396709456 is about 734.7803227677.

The spelling of 396709456 in words is "three hundred ninety-six million, seven hundred nine thousand, four hundred fifty-six".