395256917 has 8 divisors (see below), whose sum is σ = 431343840. Its totient is φ = 359195760.

The previous prime is 395256899. The next prime is 395256923. The reversal of 395256917 is 719652593.

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

It is not a de Polignac number, because 395256917 - 2¹⁰ = 395255893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395256317) 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, 40634 + ... + 49412.

It is an arithmetic number, because the mean of its divisors is an integer number (53917980).

Almost surely, 2^395256917 is an apocalyptic number.

It is an amenable number.

395256917 is a deficient number, since it is larger than the sum of its proper divisors (36086923).

395256917 is a wasteful number, since it uses less digits than its factorization.

395256917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12883.

The product of its digits is 510300, while the sum is 47.

The square root of 395256917 is about 19881.0693122880. The cubic root of 395256917 is about 733.8824344517.

The spelling of 395256917 in words is "three hundred ninety-five million, two hundred fifty-six thousand, nine hundred seventeen".