199452089 has 8 divisors (see below), whose sum is σ = 205142088. Its totient is φ = 193777920.

The previous prime is 199452083. The next prime is 199452107. The reversal of 199452089 is 980254991.

It can be written as a sum of positive squares in 4 ways, for example, as 25080064 + 174372025 = 5008^2 + 13205^2 .

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 199452089 - 2¹⁶ = 199386553 is a prime.

It is a super-2 number, since 2×199452089² = 79562271612927842, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199452083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24449 + ... + 31569.

It is an arithmetic number, because the mean of its divisors is an integer number (25642761).

Almost surely, 2^199452089 is an apocalyptic number.

It is an amenable number.

199452089 is a deficient number, since it is larger than the sum of its proper divisors (5689999).

199452089 is an equidigital number, since it uses as much as digits as its factorization.

199452089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7915.

The product of its (nonzero) digits is 233280, while the sum is 47.

The square root of 199452089 is about 14122.7507589704. The cubic root of 199452089 is about 584.2690253997.

The spelling of 199452089 in words is "one hundred ninety-nine million, four hundred fifty-two thousand, eighty-nine".