199040306 has 8 divisors (see below), whose sum is σ = 300286764. Its totient is φ = 98944720.

The previous prime is 199040299. The next prime is 199040323. The reversal of 199040306 is 603040991.

It can be written as a sum of positive squares in 2 ways, for example, as 197149681 + 1890625 = 14041^2 + 1375^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287285 + ... + 287976.

Almost surely, 2^199040306 is an apocalyptic number.

199040306 is a deficient number, since it is larger than the sum of its proper divisors (101246458).

199040306 is a wasteful number, since it uses less digits than its factorization.

199040306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575436.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 199040306 is about 14108.1645156271. The cubic root of 199040306 is about 583.8666600721.

The spelling of 199040306 in words is "one hundred ninety-nine million, forty thousand, three hundred six".