396897696 has 144 divisors (see below), whose sum is σ = 1223468064. Its totient is φ = 121324032.

The previous prime is 396897679. The next prime is 396897701. The reversal of 396897696 is 696798693.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 849655 + ... + 850121.

It is an arithmetic number, because the mean of its divisors is an integer number (8496306).

Almost surely, 2^396897696 is an apocalyptic number.

396897696 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 396897696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611734032).

396897696 is an abundant number, since it is smaller than the sum of its proper divisors (826570368).

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

396897696 is a wasteful number, since it uses less digits than its factorization.

396897696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723 (or 712 counting only the distinct ones).

The product of its digits is 26453952, while the sum is 63.

The square root of 396897696 is about 19922.2914344711. The cubic root of 396897696 is about 734.8965229865.

The spelling of 396897696 in words is "three hundred ninety-six million, eight hundred ninety-seven thousand, six hundred ninety-six".