199457289 has 16 divisors (see below), whose sum is σ = 297047040. Its totient is φ = 132271920.

The previous prime is 199457287. The next prime is 199457369. The reversal of 199457289 is 982754991.

It is not a de Polignac number, because 199457289 - 2¹ = 199457287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199457287) 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, 14182 + ... + 24495.

It is an arithmetic number, because the mean of its divisors is an integer number (18565440).

Almost surely, 2^199457289 is an apocalyptic number.

It is an amenable number.

199457289 is a deficient number, since it is larger than the sum of its proper divisors (97589751).

199457289 is a wasteful number, since it uses less digits than its factorization.

199457289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38877 (or 38871 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 199457289 is about 14122.9348578828. The cubic root of 199457289 is about 584.2741029307.

The spelling of 199457289 in words is "one hundred ninety-nine million, four hundred fifty-seven thousand, two hundred eighty-nine".