199880447 has 8 divisors (see below), whose sum is σ = 215402880. Its totient is φ = 184379040.

The previous prime is 199880413. The next prime is 199880477. The reversal of 199880447 is 744088991.

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

It is a cyclic number.

It is not a de Polignac number, because 199880447 - 2¹⁰ = 199879423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 199880395 and 199880404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199880477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18497 + ... + 27237.

It is an arithmetic number, because the mean of its divisors is an integer number (26925360).

Almost surely, 2^199880447 is an apocalyptic number.

199880447 is a deficient number, since it is larger than the sum of its proper divisors (15522433).

199880447 is a wasteful number, since it uses less digits than its factorization.

199880447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10513.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 199880447 is about 14137.9081550277. The cubic root of 199880447 is about 584.6869993858.

The spelling of 199880447 in words is "one hundred ninety-nine million, eight hundred eighty thousand, four hundred forty-seven".