395447973 has 8 divisors (see below), whose sum is σ = 545445600. Its totient is φ = 254541168.

The previous prime is 395447959. The next prime is 395448013. The reversal of 395447973 is 379744593.

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

It is a de Polignac number, because none of the positive numbers 2^k-395447973 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395447953) 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, 2272603 + ... + 2272776.

It is an arithmetic number, because the mean of its divisors is an integer number (68180700).

Almost surely, 2^395447973 is an apocalyptic number.

It is an amenable number.

395447973 is a deficient number, since it is larger than the sum of its proper divisors (149997627).

395447973 is a wasteful number, since it uses less digits than its factorization.

395447973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4545411.

The product of its digits is 2857680, while the sum is 51.

The square root of 395447973 is about 19885.8737047181. The cubic root of 395447973 is about 734.0006613996. Note that the first 3 decimals are identical.

The spelling of 395447973 in words is "three hundred ninety-five million, four hundred forty-seven thousand, nine hundred seventy-three".