395315287 has 8 divisors (see below), whose sum is σ = 404243136. Its totient is φ = 386441952.

The previous prime is 395315251. The next prime is 395315293. The reversal of 395315287 is 782513593.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-395315287 is a prime.

It is a super-2 number, since 2×395315287² = 312548352271784738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395315227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1218 + ... + 28144.

It is an arithmetic number, because the mean of its divisors is an integer number (50530392).

Almost surely, 2^395315287 is an apocalyptic number.

395315287 is a deficient number, since it is larger than the sum of its proper divisors (8927849).

395315287 is a wasteful number, since it uses less digits than its factorization.

395315287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27257.

The product of its digits is 226800, while the sum is 43.

The square root of 395315287 is about 19882.5372374856. The cubic root of 395315287 is about 733.9185583054.

The spelling of 395315287 in words is "three hundred ninety-five million, three hundred fifteen thousand, two hundred eighty-seven".