7986479317 has 16 divisors (see below), whose sum is σ = 8623059120. Its totient is φ = 7368671232.

The previous prime is 7986479287. The next prime is 7986479327. The reversal of 7986479317 is 7139746897.

It can be written as a sum of positive squares in 8 ways, for example, as 439908676 + 7546570641 = 20974^2 + 86871^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7986479317 is a prime.

It is a super-3 number, since 3×7986479317³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7986479327) 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, 1338613 + ... + 1344565.

It is an arithmetic number, because the mean of its divisors is an integer number (538941195).

Almost surely, 2^7986479317 is an apocalyptic number.

It is an amenable number.

7986479317 is a deficient number, since it is larger than the sum of its proper divisors (636579803).

7986479317 is a wasteful number, since it uses less digits than its factorization.

7986479317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7512.

The product of its digits is 16003008, while the sum is 61.

The square root of 7986479317 is about 89367.1042218556. The cubic root of 7986479317 is about 1998.8726410670.

The spelling of 7986479317 in words is "seven billion, nine hundred eighty-six million, four hundred seventy-nine thousand, three hundred seventeen".