490634 has 4 divisors (see below), whose sum is σ = 735954. Its totient is φ = 245316.

The previous prime is 490631. The next prime is 490643. The reversal of 490634 is 436094.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436094 = 2 ⋅218047.

It can be written as a sum of positive squares in only one way, i.e., 366025 + 124609 = 605^2 + 353^2 .

It is not an unprimeable number, because it can be changed into a prime (490631) 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, 122657 + ... + 122660.

2⁴⁹⁰⁶³⁴ is an apocalyptic number.

490634 is a deficient number, since it is larger than the sum of its proper divisors (245320).

490634 is a wasteful number, since it uses less digits than its factorization.

490634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245319.

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

The square root of 490634 is about 700.4527107521. The cubic root of 490634 is about 78.8713389366.

The spelling of 490634 in words is "four hundred ninety thousand, six hundred thirty-four".