197287893 has 40 divisors (see below), whose sum is σ = 323563680. Its totient is φ = 118804320.

The previous prime is 197287861. The next prime is 197287949. The reversal of 197287893 is 398782791.

It is not a de Polignac number, because 197287893 - 2⁵ = 197287861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197287093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 158871 + ... + 160107.

It is an arithmetic number, because the mean of its divisors is an integer number (8089092).

Almost surely, 2^197287893 is an apocalyptic number.

It is an amenable number.

197287893 is a deficient number, since it is larger than the sum of its proper divisors (126275787).

197287893 is a wasteful number, since it uses less digits than its factorization.

197287893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439 (or 1430 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 197287893 is about 14045.9208669279. The cubic root of 197287893 is about 582.1480917649.

The spelling of 197287893 in words is "one hundred ninety-seven million, two hundred eighty-seven thousand, eight hundred ninety-three".