199221748 has 24 divisors (see below), whose sum is σ = 392603904. Its totient is φ = 87633600.

The previous prime is 199221731. The next prime is 199221761. The reversal of 199221748 is 847122991.

It is a happy number.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 71665 + ... + 74392.

It is an arithmetic number, because the mean of its divisors is an integer number (16358496).

Almost surely, 2^199221748 is an apocalyptic number.

It is an amenable number.

199221748 is a deficient number, since it is larger than the sum of its proper divisors (193382156).

199221748 is a wasteful number, since it uses less digits than its factorization.

199221748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146103 (or 146101 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 199221748 is about 14114.5934408328. The cubic root of 199221748 is about 584.0440207325.

The spelling of 199221748 in words is "one hundred ninety-nine million, two hundred twenty-one thousand, seven hundred forty-eight".