275439 has 4 divisors (see below), whose sum is σ = 367256. Its totient is φ = 183624.

The previous prime is 275423. The next prime is 275447. The reversal of 275439 is 934572.

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

It is not a de Polignac number, because 275439 - 2⁴ = 275423 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275419) 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, 45904 + ... + 45909.

It is an arithmetic number, because the mean of its divisors is an integer number (91814).

2²⁷⁵⁴³⁹ is an apocalyptic number.

275439 is a deficient number, since it is larger than the sum of its proper divisors (91817).

275439 is an equidigital number, since it uses as much as digits as its factorization.

275439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91816.

The product of its digits is 7560, while the sum is 30.

The square root of 275439 is about 524.8228272474. The cubic root of 275439 is about 65.0641575604.

The spelling of 275439 in words is "two hundred seventy-five thousand, four hundred thirty-nine".