199979633 has 8 divisors (see below), whose sum is σ = 233212800. Its totient is φ = 171410820.

The previous prime is 199979629. The next prime is 199979651. The reversal of 199979633 is 336979991.

It is not a de Polignac number, because 199979633 - 2² = 199979629 is a prime.

It is a super-2 number, since 2×199979633² = 79983707229629378, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199979623) 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 7 ways as a sum of consecutive naturals, for example, 291173 + ... + 291858.

It is an arithmetic number, because the mean of its divisors is an integer number (29151600).

Almost surely, 2^199979633 is an apocalyptic number.

It is an amenable number.

199979633 is a deficient number, since it is larger than the sum of its proper divisors (33233167).

199979633 is an frugal number, since it uses more digits than its factorization.

199979633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583052 (or 583038 counting only the distinct ones).

The product of its digits is 2480058, while the sum is 56.

The square root of 199979633 is about 14141.4155232070. The cubic root of 199979633 is about 584.7836958123.

The spelling of 199979633 in words is "one hundred ninety-nine million, nine hundred seventy-nine thousand, six hundred thirty-three".