7999347499 has 32 divisors (see below), whose sum is σ = 9647527680. Its totient is φ = 6536553600.

The previous prime is 7999347487. The next prime is 7999347509. The reversal of 7999347499 is 9947439997.

It is a cyclic number.

It is not a de Polignac number, because 7999347499 - 2¹¹ = 7999345451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7999347409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 898329 + ... + 907189.

It is an arithmetic number, because the mean of its divisors is an integer number (301485240).

Almost surely, 2^7999347499 is an apocalyptic number.

7999347499 is a deficient number, since it is larger than the sum of its proper divisors (1648180181).

7999347499 is a wasteful number, since it uses less digits than its factorization.

7999347499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9051.

The product of its digits is 138883248, while the sum is 70.

The square root of 7999347499 is about 89439.0714341333. The cubic root of 7999347499 is about 1999.9456234383.

The spelling of 7999347499 in words is "seven billion, nine hundred ninety-nine million, three hundred forty-seven thousand, four hundred ninety-nine".