199594340 has 72 divisors (see below), whose sum is σ = 467972736. Its totient is φ = 71438400.

The previous prime is 199594309. The next prime is 199594349. The reversal of 199594340 is 43495991.

It is a happy number.

199594340 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 199594291 and 199594300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199594349) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161525 + ... + 162755.

Almost surely, 2^199594340 is an apocalyptic number.

199594340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 199594340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233986368).

199594340 is an abundant number, since it is smaller than the sum of its proper divisors (268378396).

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

199594340 is a wasteful number, since it uses less digits than its factorization.

199594340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1316 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 199594340 is about 14127.7860969085. The cubic root of 199594340 is about 584.4078943421.

The spelling of 199594340 in words is "one hundred ninety-nine million, five hundred ninety-four thousand, three hundred forty".