490961 has 4 divisors (see below), whose sum is σ = 495924. Its totient is φ = 486000.

The previous prime is 490957. The next prime is 490967. The reversal of 490961 is 169094.

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 462400 + 28561 = 680^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 490961 - 2² = 490957 is a prime.

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

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 490961.

It is not an unprimeable number, because it can be changed into a prime (490967) 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, 2330 + ... + 2531.

It is an arithmetic number, because the mean of its divisors is an integer number (123981).

2⁴⁹⁰⁹⁶¹ is an apocalyptic number.

It is an amenable number.

490961 is a deficient number, since it is larger than the sum of its proper divisors (4963).

490961 is a wasteful number, since it uses less digits than its factorization.

490961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 490961 is about 700.6860923409. The cubic root of 490961 is about 78.8888572226. Note that the first 4 decimals are identical.

The spelling of 490961 in words is "four hundred ninety thousand, nine hundred sixty-one".