199996860 has 48 divisors (see below), whose sum is σ = 639991296. Its totient is φ = 45713472.

The previous prime is 199996837. The next prime is 199996861. The reversal of 199996860 is 68699991.

199996860 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

199996860 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 199996860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199996861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 237672 + ... + 238511.

It is an arithmetic number, because the mean of its divisors is an integer number (13333152).

Almost surely, 2^199996860 is an apocalyptic number.

199996860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199996860 is an abundant number, since it is smaller than the sum of its proper divisors (439994436).

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

199996860 is a wasteful number, since it uses less digits than its factorization.

199996860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476202 (or 476200 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 57.

The square root of 199996860 is about 14142.0246075306. The cubic root of 199996860 is about 584.8004871547.

The spelling of 199996860 in words is "one hundred ninety-nine million, nine hundred ninety-six thousand, eight hundred sixty".