200172879 has 12 divisors (see below), whose sum is σ = 290171232. Its totient is φ = 132972000.

The previous prime is 200172871. The next prime is 200172893. The reversal of 200172879 is 978271002.

It is not a de Polignac number, because 200172879 - 2³ = 200172871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200172871) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37047 + ... + 42104.

It is an arithmetic number, because the mean of its divisors is an integer number (24180936).

Almost surely, 2^200172879 is an apocalyptic number.

200172879 is a deficient number, since it is larger than the sum of its proper divisors (89998353).

200172879 is a wasteful number, since it uses less digits than its factorization.

200172879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79438 (or 79435 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 200172879 is about 14148.2464991249. The cubic root of 200172879 is about 584.9719995364.

The spelling of 200172879 in words is "two hundred million, one hundred seventy-two thousand, eight hundred seventy-nine".