199149937 has 4 divisors (see below), whose sum is σ = 227599936. Its totient is φ = 170699940.

The previous prime is 199149919. The next prime is 199149941. The reversal of 199149937 is 739941991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 199149937 - 2⁷ = 199149809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199149967) 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 3 ways as a sum of consecutive naturals, for example, 14224989 + ... + 14225002.

It is an arithmetic number, because the mean of its divisors is an integer number (56899984).

Almost surely, 2^199149937 is an apocalyptic number.

It is an amenable number.

199149937 is a deficient number, since it is larger than the sum of its proper divisors (28449999).

199149937 is an equidigital number, since it uses as much as digits as its factorization.

199149937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28449998.

The product of its digits is 551124, while the sum is 52.

The square root of 199149937 is about 14112.0493550724. The cubic root of 199149937 is about 583.9738379238.

The spelling of 199149937 in words is "one hundred ninety-nine million, one hundred forty-nine thousand, nine hundred thirty-seven".