490538 has 4 divisors (see below), whose sum is σ = 735810. Its totient is φ = 245268.

The previous prime is 490537. The next prime is 490541. The reversal of 490538 is 835094.

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

It can be written as a sum of positive squares in only one way, i.e., 332929 + 157609 = 577^2 + 397^2 .

It is a Curzon number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 490538.

It is not an unprimeable number, because it can be changed into a prime (490537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122633 + ... + 122636.

2⁴⁹⁰⁵³⁸ is an apocalyptic number.

490538 is a deficient number, since it is larger than the sum of its proper divisors (245272).

490538 is a wasteful number, since it uses less digits than its factorization.

490538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245271.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 490538 is about 700.3841802896. The cubic root of 490538 is about 78.8661944756.

The spelling of 490538 in words is "four hundred ninety thousand, five hundred thirty-eight".