6459479999 has 4 divisors (see below), whose sum is σ = 7382262864. Its totient is φ = 5536697136.

The previous prime is 6459479959. The next prime is 6459480023. The reversal of 6459479999 is 9999749546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6459479999 - 2²⁰ = 6458431423 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 (6459479959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461391422 + ... + 461391435.

It is an arithmetic number, because the mean of its divisors is an integer number (1845565716).

Almost surely, 2^6459479999 is an apocalyptic number.

6459479999 is a deficient number, since it is larger than the sum of its proper divisors (922782865).

6459479999 is an equidigital number, since it uses as much as digits as its factorization.

6459479999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922782864.

The product of its digits is 198404640, while the sum is 71.

The square root of 6459479999 is about 80370.8902464070. The cubic root of 6459479999 is about 1862.3695086512.

The spelling of 6459479999 in words is "six billion, four hundred fifty-nine million, four hundred seventy-nine thousand, nine hundred ninety-nine".