272106309 has 4 divisors (see below), whose sum is σ = 362808416. Its totient is φ = 181404204.

The previous prime is 272106271. The next prime is 272106311. The reversal of 272106309 is 903601272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 272106309 - 2⁷ = 272106181 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 (272106319) 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, 45351049 + ... + 45351054.

It is an arithmetic number, because the mean of its divisors is an integer number (90702104).

Almost surely, 2^272106309 is an apocalyptic number.

It is an amenable number.

272106309 is a deficient number, since it is larger than the sum of its proper divisors (90702107).

272106309 is an equidigital number, since it uses as much as digits as its factorization.

272106309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90702106.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 272106309 is about 16495.6451525850. The cubic root of 272106309 is about 648.0067609987.

The spelling of 272106309 in words is "two hundred seventy-two million, one hundred six thousand, three hundred nine".