654438489 has 48 divisors (see below), whose sum is σ = 965021184. Its totient is φ = 393984000.

The previous prime is 654438487. The next prime is 654438509. The reversal of 654438489 is 984834456.

It is not a de Polignac number, because 654438489 - 2¹ = 654438487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654438487) 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 47 ways as a sum of consecutive naturals, for example, 3390777 + ... + 3390969.

It is an arithmetic number, because the mean of its divisors is an integer number (20104608).

Almost surely, 2^654438489 is an apocalyptic number.

It is an amenable number.

654438489 is a deficient number, since it is larger than the sum of its proper divisors (310582695).

654438489 is a wasteful number, since it uses less digits than its factorization.

654438489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366 (or 347 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 51.

The square root of 654438489 is about 25581.9954069263. The cubic root of 654438489 is about 868.2063230182.

The spelling of 654438489 in words is "six hundred fifty-four million, four hundred thirty-eight thousand, four hundred eighty-nine".