523439 has 16 divisors (see below), whose sum is σ = 642048. Its totient is φ = 417312.

The previous prime is 523433. The next prime is 523459. The reversal of 523439 is 934325.

It is not a de Polignac number, because 523439 - 2¹⁶ = 457903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11114 + ... + 11160.

It is an arithmetic number, because the mean of its divisors is an integer number (40128).

2⁵²³⁴³⁹ is an apocalyptic number.

523439 is a deficient number, since it is larger than the sum of its proper divisors (118609).

523439 is a wasteful number, since it uses less digits than its factorization.

523439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134.

The product of its digits is 3240, while the sum is 26.

The square root of 523439 is about 723.4908430658. The cubic root of 523439 is about 80.5913985735.

The spelling of 523439 in words is "five hundred twenty-three thousand, four hundred thirty-nine".