195447 has 16 divisors (see below), whose sum is σ = 306432. Its totient is φ = 108480.

The previous prime is 195443. The next prime is 195457. The reversal of 195447 is 744591.

It is a happy number.

It is not a de Polignac number, because 195447 - 2² = 195443 is a prime.

It is an Ulam number.

195447 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195447.

It is not an unprimeable number, because it can be changed into a prime (195443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 748 + ... + 974.

It is an arithmetic number, because the mean of its divisors is an integer number (19152).

2¹⁹⁵⁴⁴⁷ is an apocalyptic number.

195447 is a deficient number, since it is larger than the sum of its proper divisors (110985).

195447 is a wasteful number, since it uses less digits than its factorization.

195447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278.

The product of its digits is 5040, while the sum is 30.

The square root of 195447 is about 442.0938814324. The cubic root of 195447 is about 58.0331756297.

The spelling of 195447 in words is "one hundred ninety-five thousand, four hundred forty-seven".