195961399 has 8 divisors (see below), whose sum is σ = 200718320. Its totient is φ = 191258496.

The previous prime is 195961393. The next prime is 195961417. The reversal of 195961399 is 993169591.

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

It is a cyclic number.

It is not a de Polignac number, because 195961399 - 2³ = 195961391 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 (195961391) 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, 6114 + ... + 20719.

It is an arithmetic number, because the mean of its divisors is an integer number (25089790).

Almost surely, 2^195961399 is an apocalyptic number.

195961399 is a deficient number, since it is larger than the sum of its proper divisors (4756921).

195961399 is a wasteful number, since it uses less digits than its factorization.

195961399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27009.

The product of its digits is 590490, while the sum is 52.

The square root of 195961399 is about 13998.6213249734. The cubic root of 195961399 is about 580.8404373598.

The spelling of 195961399 in words is "one hundred ninety-five million, nine hundred sixty-one thousand, three hundred ninety-nine".