490387 has 4 divisors (see below), whose sum is σ = 492480. Its totient is φ = 488296.

The previous prime is 490367. The next prime is 490393. The reversal of 490387 is 783094.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 490387 - 2¹¹ = 488339 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 643 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (123120).

2⁴⁹⁰³⁸⁷ is an apocalyptic number.

490387 is a deficient number, since it is larger than the sum of its proper divisors (2093).

490387 is a wasteful number, since it uses less digits than its factorization.

490387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2092.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 490387 is about 700.2763740124. The cubic root of 490387 is about 78.8581013089.

The spelling of 490387 in words is "four hundred ninety thousand, three hundred eighty-seven".