497021589 has 20 divisors (see below), whose sum is σ = 781543840. Its totient is φ = 313907400.

The previous prime is 497021587. The next prime is 497021593. The reversal of 497021589 is 985120794.

497021589 is a `hidden beast` number, since 49 + 7 + 0 + 21 + 589 = 666.

It is not a de Polignac number, because 497021589 - 2¹ = 497021587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497021587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 159937 + ... + 163014.

It is an arithmetic number, because the mean of its divisors is an integer number (39077192).

Almost surely, 2^497021589 is an apocalyptic number.

It is an amenable number.

497021589 is a deficient number, since it is larger than the sum of its proper divisors (284522251).

497021589 is a wasteful number, since it uses less digits than its factorization.

497021589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322982 (or 322973 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 497021589 is about 22293.9810038494. The cubic root of 497021589 is about 792.1214087294.

The spelling of 497021589 in words is "four hundred ninety-seven million, twenty-one thousand, five hundred eighty-nine".