509272199 has 4 divisors (see below), whose sum is σ = 514314600. Its totient is φ = 504229800.

The previous prime is 509272189. The next prime is 509272217. The reversal of 509272199 is 991272905.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 509272199 - 2²⁴ = 492494983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (509272139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2521049 + ... + 2521250.

It is an arithmetic number, because the mean of its divisors is an integer number (128578650).

Almost surely, 2^509272199 is an apocalyptic number.

509272199 is a deficient number, since it is larger than the sum of its proper divisors (5042401).

509272199 is a wasteful number, since it uses less digits than its factorization.

509272199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5042400.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 509272199 is about 22567.0600433464. The cubic root of 509272199 is about 798.5767397268.

The spelling of 509272199 in words is "five hundred nine million, two hundred seventy-two thousand, one hundred ninety-nine".