269009 has 4 divisors (see below), whose sum is σ = 289716. Its totient is φ = 248304.

The previous prime is 268999. The next prime is 269023. The reversal of 269009 is 900962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900962 = 2 ⋅450481.

It can be written as a sum of positive squares in 2 ways, for example, as 144400 + 124609 = 380^2 + 353^2 .

It is a cyclic number.

It is not a de Polignac number, because 269009 - 2⁴ = 268993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (269029) 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, 10334 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (72429).

2²⁶⁹⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

269009 is a deficient number, since it is larger than the sum of its proper divisors (20707).

269009 is a wasteful number, since it uses less digits than its factorization.

269009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20706.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 269009 is about 518.6607754593. The cubic root of 269009 is about 64.5538680249.

The spelling of 269009 in words is "two hundred sixty-nine thousand, nine".