199974975 has 24 divisors (see below), whose sum is σ = 333728640. Its totient is φ = 105652320.

The previous prime is 199974947. The next prime is 199974977. The reversal of 199974975 is 579479991.

It is a happy number.

It is not a de Polignac number, because 199974975 - 2⁶ = 199974911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199974977) 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 23 ways as a sum of consecutive naturals, for example, 4435 + ... + 20484.

It is an arithmetic number, because the mean of its divisors is an integer number (13905360).

Almost surely, 2^199974975 is an apocalyptic number.

199974975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

199974975 is a deficient number, since it is larger than the sum of its proper divisors (133753665).

199974975 is a wasteful number, since it uses less digits than its factorization.

199974975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25039 (or 25034 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 60.

The square root of 199974975 is about 14141.2508286926. The cubic root of 199974975 is about 584.7791554439.

The spelling of 199974975 in words is "one hundred ninety-nine million, nine hundred seventy-four thousand, nine hundred seventy-five".