199826249 has 16 divisors (see below), whose sum is σ = 240862080. Its totient is φ = 161948160.

The previous prime is 199826243. The next prime is 199826257. The reversal of 199826249 is 942628991.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199826249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 199826197 and 199826206.

It is not an unprimeable number, because it can be changed into a prime (199826243) 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, 86777 + ... + 89049.

It is an arithmetic number, because the mean of its divisors is an integer number (15053880).

Almost surely, 2^199826249 is an apocalyptic number.

199826249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

199826249 is a deficient number, since it is larger than the sum of its proper divisors (41035831).

199826249 is a wasteful number, since it uses less digits than its factorization.

199826249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2960.

The product of its digits is 559872, while the sum is 50.

The square root of 199826249 is about 14135.9912634382. The cubic root of 199826249 is about 584.6341482422.

The spelling of 199826249 in words is "one hundred ninety-nine million, eight hundred twenty-six thousand, two hundred forty-nine".