4509865679 has 4 divisors (see below), whose sum is σ = 4919853480. Its totient is φ = 4099877880.

The previous prime is 4509865667. The next prime is 4509865687. The reversal of 4509865679 is 9765689054.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4509865679 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 (4509865649) 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, 204993884 + ... + 204993905.

It is an arithmetic number, because the mean of its divisors is an integer number (1229963370).

Almost surely, 2^4509865679 is an apocalyptic number.

4509865679 is a deficient number, since it is larger than the sum of its proper divisors (409987801).

4509865679 is a wasteful number, since it uses less digits than its factorization.

4509865679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409987800.

The product of its (nonzero) digits is 16329600, while the sum is 59.

The square root of 4509865679 is about 67155.5334950144. The cubic root of 4509865679 is about 1652.1692532326.

The spelling of 4509865679 in words is "four billion, five hundred nine million, eight hundred sixty-five thousand, six hundred seventy-nine".