396681448 has 16 divisors (see below), whose sum is σ = 744502500. Its totient is φ = 198147456.

The previous prime is 396681443. The next prime is 396681463. The reversal of 396681448 is 844186693.

It can be written as a sum of positive squares in 2 ways, for example, as 392753124 + 3928324 = 19818^2 + 1982^2 .

It is not an unprimeable number, because it can be changed into a prime (396681443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15243 + ... + 32026.

Almost surely, 2^396681448 is an apocalyptic number.

It is an amenable number.

396681448 is a deficient number, since it is larger than the sum of its proper divisors (347821052).

396681448 is a wasteful number, since it uses less digits than its factorization.

396681448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48324 (or 48320 counting only the distinct ones).

The product of its digits is 995328, while the sum is 49.

The square root of 396681448 is about 19916.8634076754. The cubic root of 396681448 is about 734.7630303376.

The spelling of 396681448 in words is "three hundred ninety-six million, six hundred eighty-one thousand, four hundred forty-eight".