396211788 has 144 divisors (see below), whose sum is σ = 1220593920. Its totient is φ = 105846912.

The previous prime is 396211771. The next prime is 396211793. The reversal of 396211788 is 887112693.

396211788 is a `hidden beast` number, since 3 + 9 + 621 + 17 + 8 + 8 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 396906 + ... + 397902.

Almost surely, 2^396211788 is an apocalyptic number.

396211788 is a gapful number since it is divisible by the number (38) 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 396211788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (610296960).

396211788 is an abundant number, since it is smaller than the sum of its proper divisors (824382132).

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

396211788 is a wasteful number, since it uses less digits than its factorization.

396211788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116 (or 1111 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 396211788 is about 19905.0694045512. The cubic root of 396211788 is about 734.4729360330.

The spelling of 396211788 in words is "three hundred ninety-six million, two hundred eleven thousand, seven hundred eighty-eight".