272809939 has 4 divisors (see below), whose sum is σ = 274223656. Its totient is φ = 271396224.

The previous prime is 272809919. The next prime is 272809967. The reversal of 272809939 is 939908272.

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 272809939 - 2⁷ = 272809811 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 272809892 and 272809901.

It is not an unprimeable number, because it can be changed into a prime (272809909) 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, 706569 + ... + 706954.

It is an arithmetic number, because the mean of its divisors is an integer number (68555914).

Almost surely, 2^272809939 is an apocalyptic number.

272809939 is a deficient number, since it is larger than the sum of its proper divisors (1413717).

272809939 is a wasteful number, since it uses less digits than its factorization.

272809939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1413716.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 272809939 is about 16516.9591329639. The cubic root of 272809939 is about 648.5648327663.

The spelling of 272809939 in words is "two hundred seventy-two million, eight hundred nine thousand, nine hundred thirty-nine".