395999982 has 128 divisors (see below), whose sum is σ = 1036800000. Its totient is φ = 109714176.

The previous prime is 395999971. The next prime is 395999987. The reversal of 395999982 is 289999593.

395999982 is a `hidden beast` number, since 39 + 599 + 9 + 9 + 8 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395999987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2657644 + ... + 2657792.

It is an arithmetic number, because the mean of its divisors is an integer number (8100000).

Almost surely, 2^395999982 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 395999982, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518400000).

395999982 is an abundant number, since it is smaller than the sum of its proper divisors (640800018).

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

395999982 is a wasteful number, since it uses less digits than its factorization.

395999982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 329 counting only the distinct ones).

The product of its digits is 14171760, while the sum is 63.

The square root of 395999982 is about 19899.7482898654. The cubic root of 395999982 is about 734.3420350786.

The spelling of 395999982 in words is "three hundred ninety-five million, nine hundred ninety-nine thousand, nine hundred eighty-two".