490494557 has 36 divisors (see below), whose sum is σ = 638363520. Its totient is φ = 374661504.

The previous prime is 490494551. The next prime is 490494569. The reversal of 490494557 is 755494094.

It is not a de Polignac number, because 490494557 - 2¹⁴ = 490478173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490494551) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 268148 + ... + 269970.

It is an arithmetic number, because the mean of its divisors is an integer number (17732320).

Almost surely, 2^490494557 is an apocalyptic number.

It is an amenable number.

490494557 is a deficient number, since it is larger than the sum of its proper divisors (147868963).

490494557 is a wasteful number, since it uses less digits than its factorization.

490494557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890 (or 1866 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 490494557 is about 22147.1117078503. Note that the first 3 decimals coincide. The cubic root of 490494557 is about 788.6386622566.

The spelling of 490494557 in words is "four hundred ninety million, four hundred ninety-four thousand, five hundred fifty-seven".