195939447 has 8 divisors (see below), whose sum is σ = 285002880. Its totient is φ = 118751160.

The previous prime is 195939439. The next prime is 195939473. The reversal of 195939447 is 744939591.

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

It is not a de Polignac number, because 195939447 - 2³ = 195939439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195939447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195932447) 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, 2968747 + ... + 2968812.

It is an arithmetic number, because the mean of its divisors is an integer number (35625360).

Almost surely, 2^195939447 is an apocalyptic number.

195939447 is a deficient number, since it is larger than the sum of its proper divisors (89063433).

195939447 is a wasteful number, since it uses less digits than its factorization.

195939447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5937573.

The product of its digits is 1224720, while the sum is 51.

The square root of 195939447 is about 13997.8372258003. The cubic root of 195939447 is about 580.8187475687.

The spelling of 195939447 in words is "one hundred ninety-five million, nine hundred thirty-nine thousand, four hundred forty-seven".