199622965 has 8 divisors (see below), whose sum is σ = 241919928. Its totient is φ = 158116800.

The previous prime is 199622947. The next prime is 199622971. The reversal of 199622965 is 569226991.

It can be written as a sum of positive squares in 4 ways, for example, as 86881041 + 112741924 = 9321^2 + 10618^2 .

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

It is not a de Polignac number, because 199622965 - 2¹⁵ = 199590197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197142 + ... + 198151.

It is an arithmetic number, because the mean of its divisors is an integer number (30239991).

Almost surely, 2^199622965 is an apocalyptic number.

It is an amenable number.

199622965 is a deficient number, since it is larger than the sum of its proper divisors (42296963).

199622965 is a wasteful number, since it uses less digits than its factorization.

199622965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395399.

The product of its digits is 524880, while the sum is 49.

The square root of 199622965 is about 14128.7991350999. The cubic root of 199622965 is about 584.4358307995.

The spelling of 199622965 in words is "one hundred ninety-nine million, six hundred twenty-two thousand, nine hundred sixty-five".