262439 has 4 divisors (see below), whose sum is σ = 266424. Its totient is φ = 258456.

The previous prime is 262433. The next prime is 262459. The reversal of 262439 is 934262.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-262439 is a prime.

It is an Ulam 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 (262433) 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, 1892 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (66606).

2²⁶²⁴³⁹ is an apocalyptic number.

262439 is a deficient number, since it is larger than the sum of its proper divisors (3985).

262439 is an equidigital number, since it uses as much as digits as its factorization.

262439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3984.

The product of its digits is 2592, while the sum is 26.

The square root of 262439 is about 512.2880049347. The cubic root of 262439 is about 64.0239981617.

The spelling of 262439 in words is "two hundred sixty-two thousand, four hundred thirty-nine".