396989888 has 14 divisors (see below), whose sum is σ = 787776936. Its totient is φ = 198494912.

The previous prime is 396989851. The next prime is 396989917. The reversal of 396989888 is 888989693.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3101420 + ... + 3101547.

Almost surely, 2^396989888 is an apocalyptic number.

It is an amenable number.

396989888 is a deficient number, since it is larger than the sum of its proper divisors (390787048).

396989888 is an equidigital number, since it uses as much as digits as its factorization.

396989888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6202979 (or 6202969 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 68.

The square root of 396989888 is about 19924.6050901894. The cubic root of 396989888 is about 734.9534195418.

The spelling of 396989888 in words is "three hundred ninety-six million, nine hundred eighty-nine thousand, eight hundred eighty-eight".