199169697 has 16 divisors (see below), whose sum is σ = 273732480. Its totient is φ = 128755200.

The previous prime is 199169689. The next prime is 199169701. The reversal of 199169697 is 796961991.

It is not a de Polignac number, because 199169697 - 2³ = 199169689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (199169617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5329 + ... + 20657.

It is an arithmetic number, because the mean of its divisors is an integer number (17108280).

Almost surely, 2^199169697 is an apocalyptic number.

It is an amenable number.

199169697 is a deficient number, since it is larger than the sum of its proper divisors (74562783).

199169697 is a wasteful number, since it uses less digits than its factorization.

199169697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15464.

The product of its digits is 1653372, while the sum is 57.

The square root of 199169697 is about 14112.7494486369. The cubic root of 199169697 is about 583.9931515820.

The spelling of 199169697 in words is "one hundred ninety-nine million, one hundred sixty-nine thousand, six hundred ninety-seven".