490236481 has 4 divisors (see below), whose sum is σ = 560270272. Its totient is φ = 420202692.

The previous prime is 490236473. The next prime is 490236491. The reversal of 490236481 is 184632094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 490236481 - 2³ = 490236473 is a prime.

It is a super-2 number, since 2×490236481² = 480663614606526722, which contains 22 as substring.

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 490236481.

It is not an unprimeable number, because it can be changed into a prime (490236401) 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, 35016885 + ... + 35016898.

It is an arithmetic number, because the mean of its divisors is an integer number (140067568).

Almost surely, 2^490236481 is an apocalyptic number.

It is an amenable number.

490236481 is a deficient number, since it is larger than the sum of its proper divisors (70033791).

490236481 is an equidigital number, since it uses as much as digits as its factorization.

490236481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70033790.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 490236481 is about 22141.2845381654. The cubic root of 490236481 is about 788.5003226870.

The spelling of 490236481 in words is "four hundred ninety million, two hundred thirty-six thousand, four hundred eighty-one".