199560149 has 4 divisors (see below), whose sum is σ = 199677036. Its totient is φ = 199443264.

The previous prime is 199560139. The next prime is 199560169. The reversal of 199560149 is 941065991.

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 120670225 + 78889924 = 10985^2 + 8882^2 .

It is a cyclic number.

It is not a de Polignac number, because 199560149 - 2¹⁶ = 199494613 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199560139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55844 + ... + 59309.

It is an arithmetic number, because the mean of its divisors is an integer number (49919259).

Almost surely, 2^199560149 is an apocalyptic number.

It is an amenable number.

199560149 is a deficient number, since it is larger than the sum of its proper divisors (116887).

199560149 is a wasteful number, since it uses less digits than its factorization.

199560149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116886.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 199560149 is about 14126.5759828771. The cubic root of 199560149 is about 584.3745222679.

The spelling of 199560149 in words is "one hundred ninety-nine million, five hundred sixty thousand, one hundred forty-nine".