395541980 has 12 divisors (see below), whose sum is σ = 830638200. Its totient is φ = 158216784.

The previous prime is 395541977. The next prime is 395541997. The reversal of 395541980 is 89145593.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9888530 + ... + 9888569.

It is an arithmetic number, because the mean of its divisors is an integer number (69219850).

Almost surely, 2^395541980 is an apocalyptic number.

It is an amenable number.

395541980 is an abundant number, since it is smaller than the sum of its proper divisors (435096220).

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

395541980 is a wasteful number, since it uses less digits than its factorization.

395541980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19777108 (or 19777106 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 395541980 is about 19888.2372270646. The cubic root of 395541980 is about 734.0588196892.

The spelling of 395541980 in words is "three hundred ninety-five million, five hundred forty-one thousand, nine hundred eighty".