199050999 has 32 divisors (see below), whose sum is σ = 312829440. Its totient is φ = 110218752.

The previous prime is 199050997. The next prime is 199051003. The reversal of 199050999 is 999050991.

It is not a de Polignac number, because 199050999 - 2¹ = 199050997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199050997) 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 31 ways as a sum of consecutive naturals, for example, 122907 + ... + 124515.

It is an arithmetic number, because the mean of its divisors is an integer number (9775920).

Almost surely, 2^199050999 is an apocalyptic number.

199050999 is a deficient number, since it is larger than the sum of its proper divisors (113778441).

199050999 is a wasteful number, since it uses less digits than its factorization.

199050999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its (nonzero) digits is 295245, while the sum is 51.

The square root of 199050999 is about 14108.5434754974. The cubic root of 199050999 is about 583.8771155330.

The spelling of 199050999 in words is "one hundred ninety-nine million, fifty thousand, nine hundred ninety-nine".