199149844 has 24 divisors (see below), whose sum is σ = 363744360. Its totient is φ = 95284224.

The previous prime is 199149829. The next prime is 199149901. The reversal of 199149844 is 448941991.

It can be written as a sum of positive squares in 4 ways, for example, as 31136400 + 168013444 = 5580^2 + 12962^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5512 + ... + 20704.

It is an arithmetic number, because the mean of its divisors is an integer number (15156015).

Almost surely, 2^199149844 is an apocalyptic number.

It is an amenable number.

199149844 is a deficient number, since it is larger than the sum of its proper divisors (164594516).

199149844 is a wasteful number, since it uses less digits than its factorization.

199149844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15339 (or 15337 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 199149844 is about 14112.0460600155. The cubic root of 199149844 is about 583.9737470215.

The spelling of 199149844 in words is "one hundred ninety-nine million, one hundred forty-nine thousand, eight hundred forty-four".