199109700 has 54 divisors (see below), whose sum is σ = 624101114. Its totient is φ = 53095680.

The previous prime is 199109699. The next prime is 199109707. The reversal of 199109700 is 7901991.

199109700 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 53231616 + 145878084 = 7296^2 + 12078^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (199109707) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 109717 + ... + 111516.

Almost surely, 2^199109700 is an apocalyptic number.

199109700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199109700 is an abundant number, since it is smaller than the sum of its proper divisors (424991414).

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

199109700 is a wasteful number, since it uses less digits than its factorization.

199109700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221253 (or 221243 counting only the distinct ones).

The product of its (nonzero) digits is 5103, while the sum is 36.

The square root of 199109700 is about 14110.6236573725. The cubic root of 199109700 is about 583.9345058535.

It can be divided in two parts, 199109 and 700, that added together give a square (199809 = 447²).

The spelling of 199109700 in words is "one hundred ninety-nine million, one hundred nine thousand, seven hundred".