490549 has 2 divisors, whose sum is σ = 490550. Its totient is φ = 490548.

The previous prime is 490543. The next prime is 490559. The reversal of 490549 is 945094.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324900 + 165649 = 570^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 490549 - 2³ = 490541 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 490549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245274 + 245275.

It is an arithmetic number, because the mean of its divisors is an integer number (245275).

2⁴⁹⁰⁵⁴⁹ is an apocalyptic number.

It is an amenable number.

490549 is a deficient number, since it is larger than the sum of its proper divisors (1).

490549 is an equidigital number, since it uses as much as digits as its factorization.

490549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 490549 is about 700.3920330786. The cubic root of 490549 is about 78.8667839792.

The spelling of 490549 in words is "four hundred ninety thousand, five hundred forty-nine".