491259 has 4 divisors (see below), whose sum is σ = 655016. Its totient is φ = 327504.

The previous prime is 491251. The next prime is 491261. The reversal of 491259 is 952194.

It is a happy number.

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

It is not a de Polignac number, because 491259 - 2³ = 491251 is a prime.

It is a D-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 (491251) 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, 81874 + ... + 81879.

It is an arithmetic number, because the mean of its divisors is an integer number (163754).

2⁴⁹¹²⁵⁹ is an apocalyptic number.

491259 is a deficient number, since it is larger than the sum of its proper divisors (163757).

491259 is a wasteful number, since it uses less digits than its factorization.

491259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163756.

The product of its digits is 3240, while the sum is 30.

The square root of 491259 is about 700.8987088018. The cubic root of 491259 is about 78.9048151260.

The spelling of 491259 in words is "four hundred ninety-one thousand, two hundred fifty-nine".