395945987 has 8 divisors (see below), whose sum is σ = 405160704. Its totient is φ = 386795968.

The previous prime is 395945971. The next prime is 395946037. The reversal of 395945987 is 789549593.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 395945987 - 2⁴ = 395945971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395945587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3683 + ... + 28380.

It is an arithmetic number, because the mean of its divisors is an integer number (50645088).

Almost surely, 2^395945987 is an apocalyptic number.

395945987 is a deficient number, since it is larger than the sum of its proper divisors (9214717).

395945987 is a wasteful number, since it uses less digits than its factorization.

395945987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32349.

The product of its digits is 12247200, while the sum is 59.

The square root of 395945987 is about 19898.3915681645. The cubic root of 395945987 is about 734.3086574673.

The spelling of 395945987 in words is "three hundred ninety-five million, nine hundred forty-five thousand, nine hundred eighty-seven".