199468287 has 6 divisors (see below), whose sum is σ = 288120872. Its totient is φ = 132978852.

The previous prime is 199468279. The next prime is 199468331. The reversal of 199468287 is 782864991.

It is not a de Polignac number, because 199468287 - 2³ = 199468279 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 (199468267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11081563 + ... + 11081580.

Almost surely, 2^199468287 is an apocalyptic number.

199468287 is a deficient number, since it is larger than the sum of its proper divisors (88652585).

199468287 is a wasteful number, since it uses less digits than its factorization.

199468287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22163149 (or 22163146 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 199468287 is about 14123.3242191773. The cubic root of 199468287 is about 584.2848416182.

The spelling of 199468287 in words is "one hundred ninety-nine million, four hundred sixty-eight thousand, two hundred eighty-seven".