395945986 has 4 divisors (see below), whose sum is σ = 593918982. Its totient is φ = 197972992.

The previous prime is 395945971. The next prime is 395946037. The reversal of 395945986 is 689549593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 689549593 = 283 ⋅2436571.

It can be written as a sum of positive squares in only one way, i.e., 363626761 + 32319225 = 19069^2 + 5685^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 395945986.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98986495 + ... + 98986498.

Almost surely, 2^395945986 is an apocalyptic number.

395945986 is a deficient number, since it is larger than the sum of its proper divisors (197972996).

395945986 is a wasteful number, since it uses less digits than its factorization.

395945986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197972995.

The product of its digits is 10497600, while the sum is 58.

The square root of 395945986 is about 19898.3915430368. The cubic root of 395945986 is about 734.3086568491.

The spelling of 395945986 in words is "three hundred ninety-five million, nine hundred forty-five thousand, nine hundred eighty-six".