5279193809 has 4 divisors (see below), whose sum is σ = 5281522740. Its totient is φ = 5276864880.

The previous prime is 5279193793. The next prime is 5279193811. The reversal of 5279193809 is 9083919725.

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

It can be written as a sum of positive squares in 2 ways, for example, as 563350225 + 4715843584 = 23735^2 + 68672^2 .

It is a cyclic number.

It is not a de Polignac number, because 5279193809 - 2⁴ = 5279193793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5279193869) 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, 1161062 + ... + 1165599.

It is an arithmetic number, because the mean of its divisors is an integer number (1320380685).

Almost surely, 2^5279193809 is an apocalyptic number.

It is an amenable number.

5279193809 is a deficient number, since it is larger than the sum of its proper divisors (2328931).

5279193809 is a wasteful number, since it uses less digits than its factorization.

5279193809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2328930.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 5279193809 is about 72658.0608673257. The cubic root of 5279193809 is about 1741.2289078065.

The spelling of 5279193809 in words is "five billion, two hundred seventy-nine million, one hundred ninety-three thousand, eight hundred nine".