395805980 has 24 divisors (see below), whose sum is σ = 831813360. Its totient is φ = 158204160.

The previous prime is 395805953. The next prime is 395806039. The reversal of 395805980 is 89508593.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23135 + ... + 36425.

It is an arithmetic number, because the mean of its divisors is an integer number (34658890).

Almost surely, 2^395805980 is an apocalyptic number.

It is an amenable number.

395805980 is an abundant number, since it is smaller than the sum of its proper divisors (436007380).

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

395805980 is a wasteful number, since it uses less digits than its factorization.

395805980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14789 (or 14787 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 395805980 is about 19894.8732089451. The cubic root of 395805980 is about 734.2220964415. Note that the first 3 decimals are identical.

The spelling of 395805980 in words is "three hundred ninety-five million, eight hundred five thousand, nine hundred eighty".