199961238 has 8 divisors (see below), whose sum is σ = 399922488. Its totient is φ = 66653744.

The previous prime is 199961189. The next prime is 199961249. The reversal of 199961238 is 832169991.

199961238 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

199961238 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16663431 + ... + 16663442.

It is an arithmetic number, because the mean of its divisors is an integer number (49990311).

Almost surely, 2^199961238 is an apocalyptic number.

199961238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

199961238 is a wasteful number, since it uses less digits than its factorization.

199961238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33326878.

The product of its digits is 209952, while the sum is 48.

The square root of 199961238 is about 14140.7651136705. The cubic root of 199961238 is about 584.7657649431.

The spelling of 199961238 in words is "one hundred ninety-nine million, nine hundred sixty-one thousand, two hundred thirty-eight".