275989 has 8 divisors (see below), whose sum is σ = 319680. Its totient is φ = 233376.

The previous prime is 275987. The next prime is 275999. The reversal of 275989 is 989572.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 275989 - 2¹ = 275987 is a prime.

It is a Duffinian number.

275989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275981) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (39960).

2²⁷⁵⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

275989 is a deficient number, since it is larger than the sum of its proper divisors (43691).

275989 is an equidigital number, since it uses as much as digits as its factorization.

275989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its digits is 45360, while the sum is 40.

The square root of 275989 is about 525.3465522872. The cubic root of 275989 is about 65.1074357384.

The spelling of 275989 in words is "two hundred seventy-five thousand, nine hundred eighty-nine".