199439339 has 6 divisors (see below), whose sum is σ = 219218580. Its totient is φ = 181308380.

The previous prime is 199439327. The next prime is 199439341. The reversal of 199439339 is 933934991.

It is a happy number.

199439339 is nontrivially palindromic in base 16.

It is not a de Polignac number, because 199439339 - 2⁸ = 199439083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199439389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 824009 + ... + 824250.

It is an arithmetic number, because the mean of its divisors is an integer number (36536430).

Almost surely, 2^199439339 is an apocalyptic number.

199439339 is a deficient number, since it is larger than the sum of its proper divisors (19779241).

199439339 is a wasteful number, since it uses less digits than its factorization.

199439339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648281 (or 1648270 counting only the distinct ones).

The product of its digits is 708588, while the sum is 50.

The square root of 199439339 is about 14122.2993524426. The cubic root of 199439339 is about 584.2565753106.

The spelling of 199439339 in words is "one hundred ninety-nine million, four hundred thirty-nine thousand, three hundred thirty-nine".