395491988808 has 192 divisors, whose sum is σ = 1289074176000. Its totient is φ = 107008615296.

The previous prime is 395491988791. The next prime is 395491988809. The reversal of 395491988808 is 808889194593.

395491988808 is a `hidden beast` number, since 395 + 49 + 198 + 8 + 8 + 0 + 8 = 666.

It is a super-2 number, since 2×395491988808² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (395491988809) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30512233 + ... + 30525191.

It is an arithmetic number, because the mean of its divisors is an integer number (6713928000).

Almost surely, 2^395491988808 is an apocalyptic number.

395491988808 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 395491988808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644537088000).

395491988808 is an abundant number, since it is smaller than the sum of its proper divisors (893582187192).

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

395491988808 is a wasteful number, since it uses less digits than its factorization.

395491988808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16184 (or 16177 counting only the distinct ones).

The product of its (nonzero) digits is 179159040, while the sum is 72.

The spelling of 395491988808 in words is "three hundred ninety-five billion, four hundred ninety-one million, nine hundred eighty-eight thousand, eight hundred eight".