199339497 has 18 divisors (see below), whose sum is σ = 334945338. Its totient is φ = 113908032.

The previous prime is 199339489. The next prime is 199339513. The reversal of 199339497 is 794933991.

It can be written as a sum of positive squares in only one way, i.e., 117418896 + 81920601 = 10836^2 + 9051^2 .

It is not a de Polignac number, because 199339497 - 2³ = 199339489 is a prime.

It is a super-3 number, since 3×199339497³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (199339457) 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 17 ways as a sum of consecutive naturals, for example, 225568 + ... + 226449.

Almost surely, 2^199339497 is an apocalyptic number.

It is an amenable number.

199339497 is a deficient number, since it is larger than the sum of its proper divisors (135605841).

199339497 is a wasteful number, since it uses less digits than its factorization.

199339497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452037 (or 452027 counting only the distinct ones).

The product of its digits is 1653372, while the sum is 54.

The square root of 199339497 is about 14118.7640039771. The cubic root of 199339497 is about 584.1590634855.

The spelling of 199339497 in words is "one hundred ninety-nine million, three hundred thirty-nine thousand, four hundred ninety-seven".