395746993 has 4 divisors (see below), whose sum is σ = 412953408. Its totient is φ = 378540580.

The previous prime is 395746979. The next prime is 395746999. The reversal of 395746993 is 399647593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 395746993 - 2¹⁷ = 395615921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (395746999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8603173 + ... + 8603218.

It is an arithmetic number, because the mean of its divisors is an integer number (103238352).

Almost surely, 2^395746993 is an apocalyptic number.

It is an amenable number.

395746993 is a deficient number, since it is larger than the sum of its proper divisors (17206415).

395746993 is a wasteful number, since it uses less digits than its factorization.

395746993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17206414.

The product of its digits is 5511240, while the sum is 55.

The square root of 395746993 is about 19893.3906863561. The cubic root of 395746993 is about 734.1856209016.

The spelling of 395746993 in words is "three hundred ninety-five million, seven hundred forty-six thousand, nine hundred ninety-three".