199421796 has 48 divisors (see below), whose sum is σ = 559784960. Its totient is φ = 53978400.

The previous prime is 199421779. The next prime is 199421801. The reversal of 199421796 is 697124991.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60880 + ... + 64071.

Almost surely, 2^199421796 is an apocalyptic number.

It is an amenable number.

199421796 is an abundant number, since it is smaller than the sum of its proper divisors (360363164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199421796 is a wasteful number, since it uses less digits than its factorization.

199421796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124984 (or 124982 counting only the distinct ones).

The product of its digits is 244944, while the sum is 48.

The square root of 199421796 is about 14121.6782288792. The cubic root of 199421796 is about 584.2394440972.

The spelling of 199421796 in words is "one hundred ninety-nine million, four hundred twenty-one thousand, seven hundred ninety-six".