272409 has 4 divisors (see below), whose sum is σ = 363216. Its totient is φ = 181604.

The previous prime is 272407. The next prime is 272411. The reversal of 272409 is 904272.

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 an interprime number because it is at equal distance from previous prime (272407) and next prime (272411).

It is a cyclic number.

It is not a de Polignac number, because 272409 - 2¹ = 272407 is a prime.

It is a D-number.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (272407) 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, 45399 + ... + 45404.

It is an arithmetic number, because the mean of its divisors is an integer number (90804).

2²⁷²⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

272409 is a deficient number, since it is larger than the sum of its proper divisors (90807).

272409 is an equidigital number, since it uses as much as digits as its factorization.

272409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90806.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 272409 is about 521.9281559755. The cubic root of 272409 is about 64.8246952818.

The spelling of 272409 in words is "two hundred seventy-two thousand, four hundred nine".