490981305 has 16 divisors (see below), whose sum is σ = 806802624. Its totient is φ = 254779200.

The previous prime is 490981277. The next prime is 490981313. The reversal of 490981305 is 503189094.

It is not a de Polignac number, because 490981305 - 2⁷ = 490981177 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 441771 + ... + 442880.

It is an arithmetic number, because the mean of its divisors is an integer number (50425164).

Almost surely, 2^490981305 is an apocalyptic number.

It is an amenable number.

490981305 is a deficient number, since it is larger than the sum of its proper divisors (315821319).

490981305 is a wasteful number, since it uses less digits than its factorization.

490981305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884696.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 490981305 is about 22158.0979553751. The cubic root of 490981305 is about 788.8994476057.

It can be divided in two parts, 49098 and 1305, that added together give a triangular number (50403 = T₃₁₇).

The spelling of 490981305 in words is "four hundred ninety million, nine hundred eighty-one thousand, three hundred five".