194008869 has 24 divisors (see below), whose sum is σ = 292649760. Its totient is φ = 123694368.

The previous prime is 194008817. The next prime is 194008873. The reversal of 194008869 is 968800491.

It is not a de Polignac number, because 194008869 - 2¹¹ = 194006821 is a prime.

It is a super-2 number, since 2×194008869² = 75278882501318322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194008889) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 24454 + ... + 31400.

It is an arithmetic number, because the mean of its divisors is an integer number (12193740).

Almost surely, 2^194008869 is an apocalyptic number.

It is an amenable number.

194008869 is a deficient number, since it is larger than the sum of its proper divisors (98640891).

194008869 is a wasteful number, since it uses less digits than its factorization.

194008869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7089 (or 7086 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 194008869 is about 13928.7066520909. The cubic root of 194008869 is about 578.9048587710.

The spelling of 194008869 in words is "one hundred ninety-four million, eight thousand, eight hundred sixty-nine".