199998936 has 32 divisors (see below), whose sum is σ = 555553200. Its totient is φ = 66666240.

The previous prime is 199998923. The next prime is 199998941. The reversal of 199998936 is 639899991.

It is a super-2 number, since 2×199998936² = 79999148802264192, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 462745 + ... + 463176.

Almost surely, 2^199998936 is an apocalyptic number.

It is an amenable number.

199998936 is an abundant number, since it is smaller than the sum of its proper divisors (355554264).

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

199998936 is a wasteful number, since it uses less digits than its factorization.

199998936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925936 (or 925926 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 63.

The square root of 199998936 is about 14142.0980056002. The cubic root of 199998936 is about 584.8025105891.

The spelling of 199998936 in words is "one hundred ninety-nine million, nine hundred ninety-eight thousand, nine hundred thirty-six".