199979375 has 10 divisors (see below), whose sum is σ = 249895008. Its totient is φ = 159983000.

The previous prime is 199979363. The next prime is 199979399. The reversal of 199979375 is 573979991.

It is not a de Polignac number, because 199979375 - 2⁴ = 199979359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 159359 + ... + 160608.

Almost surely, 2^199979375 is an apocalyptic number.

199979375 is a deficient number, since it is larger than the sum of its proper divisors (49915633).

199979375 is an frugal number, since it uses more digits than its factorization.

199979375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319987 (or 319972 counting only the distinct ones).

The product of its digits is 4822335, while the sum is 59.

The square root of 199979375 is about 14141.4064010621. The cubic root of 199979375 is about 584.7834443296.

The spelling of 199979375 in words is "one hundred ninety-nine million, nine hundred seventy-nine thousand, three hundred seventy-five".