6406489559 has 16 divisors (see below), whose sum is σ = 7257437280. Its totient is φ = 5618626560.

The previous prime is 6406489553. The next prime is 6406489577. The reversal of 6406489559 is 9559846046.

It is a cyclic number.

It is not a de Polignac number, because 6406489559 - 2⁸ = 6406489303 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 (6406489553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142874 + ... + 182279.

It is an arithmetic number, because the mean of its divisors is an integer number (453589830).

Almost surely, 2^6406489559 is an apocalyptic number.

6406489559 is a deficient number, since it is larger than the sum of its proper divisors (850947721).

6406489559 is a wasteful number, since it uses less digits than its factorization.

6406489559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325250.

The product of its (nonzero) digits is 9331200, while the sum is 56.

The square root of 6406489559 is about 80040.5494671295. The cubic root of 6406489559 is about 1857.2628603033.

The spelling of 6406489559 in words is "six billion, four hundred six million, four hundred eighty-nine thousand, five hundred fifty-nine".