396427788 has 18 divisors (see below), whose sum is σ = 1002081444. Its totient is φ = 132142584.

The previous prime is 396427781. The next prime is 396427789. The reversal of 396427788 is 887724693.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (396427781) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5505906 + ... + 5505977.

Almost surely, 2^396427788 is an apocalyptic number.

It is an amenable number.

396427788 is an abundant number, since it is smaller than the sum of its proper divisors (605653656).

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

396427788 is a wasteful number, since it uses less digits than its factorization.

396427788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011893 (or 11011888 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 54.

The square root of 396427788 is about 19910.4944187732. The cubic root of 396427788 is about 734.6063809383.

The spelling of 396427788 in words is "three hundred ninety-six million, four hundred twenty-seven thousand, seven hundred eighty-eight".