199205465 has 4 divisors (see below), whose sum is σ = 239046564. Its totient is φ = 159364368.

The previous prime is 199205459. The next prime is 199205483. The reversal of 199205465 is 564502991.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28955161 + 170250304 = 5381^2 + 13048^2 .

It is a cyclic number.

It is not a de Polignac number, because 199205465 - 2¹⁰ = 199204441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19920542 + ... + 19920551.

It is an arithmetic number, because the mean of its divisors is an integer number (59761641).

Almost surely, 2^199205465 is an apocalyptic number.

It is an amenable number.

199205465 is a deficient number, since it is larger than the sum of its proper divisors (39841099).

199205465 is an equidigital number, since it uses as much as digits as its factorization.

199205465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39841098.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 199205465 is about 14114.0166146990. The cubic root of 199205465 is about 584.0281084003.

The spelling of 199205465 in words is "one hundred ninety-nine million, two hundred five thousand, four hundred sixty-five".