199261471 has 4 divisors (see below), whose sum is σ = 210982752. Its totient is φ = 187540192.

The previous prime is 199261453. The next prime is 199261507. The reversal of 199261471 is 174162991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 199261471 - 2⁷ = 199261343 is a prime.

It is a super-3 number, since 3×199261471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199261421) 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 3 ways as a sum of consecutive naturals, for example, 5860615 + ... + 5860648.

It is an arithmetic number, because the mean of its divisors is an integer number (52745688).

Almost surely, 2^199261471 is an apocalyptic number.

199261471 is a deficient number, since it is larger than the sum of its proper divisors (11721281).

199261471 is a wasteful number, since it uses less digits than its factorization.

199261471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11721280.

The product of its digits is 27216, while the sum is 40.

The square root of 199261471 is about 14116.0005313120. Note that the first 3 decimals coincide. The cubic root of 199261471 is about 584.0828358369.

The spelling of 199261471 in words is "one hundred ninety-nine million, two hundred sixty-one thousand, four hundred seventy-one".