270409 has 4 divisors (see below), whose sum is σ = 272916. Its totient is φ = 267904.

The previous prime is 270407. The next prime is 270421. The reversal of 270409 is 904072.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5184 + 265225 = 72^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 270409 - 2¹ = 270407 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 270409.

It is not an unprimeable number, because it can be changed into a prime (270407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084 + ... + 1309.

It is an arithmetic number, because the mean of its divisors is an integer number (68229).

2²⁷⁰⁴⁰⁹ is an apocalyptic number.

It is an amenable number.

270409 is a deficient number, since it is larger than the sum of its proper divisors (2507).

270409 is a wasteful number, since it uses less digits than its factorization.

270409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 270409 is about 520.0086537741. The cubic root of 270409 is about 64.6656599317.

The spelling of 270409 in words is "two hundred seventy thousand, four hundred nine".