490539823 has 4 divisors (see below), whose sum is σ = 490826248. Its totient is φ = 490253400.

The previous prime is 490539817. The next prime is 490539827. The reversal of 490539823 is 328935094.

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-490539823 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490539823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490539827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140628 + ... + 144073.

It is an arithmetic number, because the mean of its divisors is an integer number (122706562).

Almost surely, 2^490539823 is an apocalyptic number.

490539823 is a deficient number, since it is larger than the sum of its proper divisors (286425).

490539823 is a wasteful number, since it uses less digits than its factorization.

490539823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286424.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 490539823 is about 22148.1336234004. The cubic root of 490539823 is about 788.6629217304.

The spelling of 490539823 in words is "four hundred ninety million, five hundred thirty-nine thousand, eight hundred twenty-three".