199999148 has 12 divisors (see below), whose sum is σ = 358535352. Its totient is φ = 97560480.

The previous prime is 199999133. The next prime is 199999183. The reversal of 199999148 is 841999991.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 609590 + ... + 609917.

It is an arithmetic number, because the mean of its divisors is an integer number (29877946).

Almost surely, 2^199999148 is an apocalyptic number.

It is an amenable number.

199999148 is a deficient number, since it is larger than the sum of its proper divisors (158536204).

199999148 is a wasteful number, since it uses less digits than its factorization.

199999148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219552 (or 1219550 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 59.

The square root of 199999148 is about 14142.1055009500. The cubic root of 199999148 is about 584.8027172204.

The spelling of 199999148 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred forty-eight".