490729 has 4 divisors (see below), whose sum is σ = 502740. Its totient is φ = 478720.

The previous prime is 490697. The next prime is 490733. The reversal of 490729 is 927094.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32400 + 458329 = 180^2 + 677^2 .

It is a cyclic number.

It is not a de Polignac number, because 490729 - 2⁵ = 490697 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 a self number, because there is not a number n which added to its sum of digits gives 490729.

It is not an unprimeable number, because it can be changed into a prime (490769) 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, 5944 + ... + 6025.

It is an arithmetic number, because the mean of its divisors is an integer number (125685).

2⁴⁹⁰⁷²⁹ is an apocalyptic number.

It is an amenable number.

490729 is a deficient number, since it is larger than the sum of its proper divisors (12011).

490729 is a wasteful number, since it uses less digits than its factorization.

490729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12010.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 490729 is about 700.5205207558. The cubic root of 490729 is about 78.8764291489.

The spelling of 490729 in words is "four hundred ninety thousand, seven hundred twenty-nine".