199522445 has 6 divisors (see below), whose sum is σ = 239464842. Its totient is φ = 159592688.

The previous prime is 199522403. The next prime is 199522469. The reversal of 199522445 is 544225991.

It can be written as a sum of positive squares in 3 ways, for example, as 24780484 + 174741961 = 4978^2 + 13219^2 .

It is not a de Polignac number, because 199522445 - 2⁶ = 199522381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28427 + ... + 34743.

It is an arithmetic number, because the mean of its divisors is an integer number (39910807).

Almost surely, 2^199522445 is an apocalyptic number.

It is an amenable number.

199522445 is a deficient number, since it is larger than the sum of its proper divisors (39942397).

199522445 is an frugal number, since it uses more digits than its factorization.

199522445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12639 (or 6322 counting only the distinct ones).

The product of its digits is 129600, while the sum is 41.

The square root of 199522445 is about 14125.2414138662. The cubic root of 199522445 is about 584.3377169156.

The spelling of 199522445 in words is "one hundred ninety-nine million, five hundred twenty-two thousand, four hundred forty-five".