648389459 has 8 divisors (see below), whose sum is σ = 704532480. Its totient is φ = 594448200.

The previous prime is 648389447. The next prime is 648389461. The reversal of 648389459 is 954983846.

It is a happy number.

648389459 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648389459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (648389359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 549827 + ... + 551004.

It is an arithmetic number, because the mean of its divisors is an integer number (88066560).

Almost surely, 2^648389459 is an apocalyptic number.

648389459 is a deficient number, since it is larger than the sum of its proper divisors (56143021).

648389459 is a wasteful number, since it uses less digits than its factorization.

648389459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100881.

The product of its digits is 7464960, while the sum is 56.

The square root of 648389459 is about 25463.4926708808. The cubic root of 648389459 is about 865.5230707595.

The spelling of 648389459 in words is "six hundred forty-eight million, three hundred eighty-nine thousand, four hundred fifty-nine".