262009 has 4 divisors (see below), whose sum is σ = 285840. Its totient is φ = 238180.

The previous prime is 262007. The next prime is 262027. The reversal of 262009 is 900262.

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 a cyclic number.

It is not a de Polignac number, because 262009 - 2¹ = 262007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (262007) 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, 11899 + ... + 11920.

It is an arithmetic number, because the mean of its divisors is an integer number (71460).

2²⁶²⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

262009 is a deficient number, since it is larger than the sum of its proper divisors (23831).

262009 is a wasteful number, since it uses less digits than its factorization.

262009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23830.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 262009 is about 511.8681470848. The cubic root of 262009 is about 63.9890117854.

The spelling of 262009 in words is "two hundred sixty-two thousand, nine".