199324669 has 4 divisors (see below), whose sum is σ = 199822140. Its totient is φ = 198827200.

The previous prime is 199324633. The next prime is 199324691. The reversal of 199324669 is 966423991.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966423991 = 13 ⋅74340307.

It can be written as a sum of positive squares in 2 ways, for example, as 137780644 + 61544025 = 11738^2 + 7845^2 .

It is a cyclic number.

It is not a de Polignac number, because 199324669 - 2¹³ = 199316477 is a prime.

It is a super-2 number, since 2×199324669² = 79460647343919122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199324469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248134 + ... + 248935.

It is an arithmetic number, because the mean of its divisors is an integer number (49955535).

Almost surely, 2^199324669 is an apocalyptic number.

It is an amenable number.

199324669 is a deficient number, since it is larger than the sum of its proper divisors (497471).

199324669 is an equidigital number, since it uses as much as digits as its factorization.

199324669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497470.

The product of its digits is 629856, while the sum is 49.

The square root of 199324669 is about 14118.2388774238. The cubic root of 199324669 is about 584.1445787739.

It can be divided in two parts, 1993 and 24669, that added together give a palindrome (26662).

The spelling of 199324669 in words is "one hundred ninety-nine million, three hundred twenty-four thousand, six hundred sixty-nine".