199432436 has 48 divisors (see below), whose sum is σ = 421948800. Its totient is φ = 80569728.

The previous prime is 199432433. The next prime is 199432451. The reversal of 199432436 is 634234991.

It is a junction number, because it is equal to n+sod(n) for n = 199432393 and 199432402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199432433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121010 + ... + 122646.

It is an arithmetic number, because the mean of its divisors is an integer number (8790600).

Almost surely, 2^199432436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199432436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (210974400).

199432436 is an abundant number, since it is smaller than the sum of its proper divisors (222516364).

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

199432436 is a wasteful number, since it uses less digits than its factorization.

199432436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1896 (or 1894 counting only the distinct ones).

The product of its digits is 139968, while the sum is 41.

The square root of 199432436 is about 14122.0549496169. The cubic root of 199432436 is about 584.2498344645.

The spelling of 199432436 in words is "one hundred ninety-nine million, four hundred thirty-two thousand, four hundred thirty-six".