199169139 has 8 divisors (see below), whose sum is σ = 285986512. Its totient is φ = 122565600.

The previous prime is 199169137. The next prime is 199169149. The reversal of 199169139 is 931961991.

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

It is not a de Polignac number, because 199169139 - 2¹ = 199169137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (199169137) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2553412 + ... + 2553489.

It is an arithmetic number, because the mean of its divisors is an integer number (35748314).

Almost surely, 2^199169139 is an apocalyptic number.

199169139 is a deficient number, since it is larger than the sum of its proper divisors (86817373).

199169139 is a wasteful number, since it uses less digits than its factorization.

199169139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5106917.

The product of its digits is 118098, while the sum is 48.

The square root of 199169139 is about 14112.7296792647. The cubic root of 199169139 is about 583.9926062037.

The spelling of 199169139 in words is "one hundred ninety-nine million, one hundred sixty-nine thousand, one hundred thirty-nine".