195286939 has 16 divisors (see below), whose sum is σ = 209927808. Its totient is φ = 181020672.

The previous prime is 195286933. The next prime is 195286943. The reversal of 195286939 is 939682591.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195286939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195286933) 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, 531934 + ... + 532300.

It is an arithmetic number, because the mean of its divisors is an integer number (13120488).

Almost surely, 2^195286939 is an apocalyptic number.

195286939 is a deficient number, since it is larger than the sum of its proper divisors (14640869).

195286939 is a wasteful number, since it uses less digits than its factorization.

195286939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774.

The product of its digits is 1049760, while the sum is 52.

The square root of 195286939 is about 13974.5103313139. The cubic root of 195286939 is about 580.1732924516.

The spelling of 195286939 in words is "one hundred ninety-five million, two hundred eighty-six thousand, nine hundred thirty-nine".