7979508487 has 4 divisors (see below), whose sum is σ = 7998553080. Its totient is φ = 7960463896.

The previous prime is 7979508463. The next prime is 7979508497. The reversal of 7979508487 is 7848059797.

It is a happy number.

7979508487 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7848059797 = 797 ⋅9847001.

It is a cyclic number.

It is not a de Polignac number, because 7979508487 - 2¹¹ = 7979506439 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 (7979508497) 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 3 ways as a sum of consecutive naturals, for example, 9521668 + ... + 9522505.

It is an arithmetic number, because the mean of its divisors is an integer number (1999638270).

Almost surely, 2^7979508487 is an apocalyptic number.

7979508487 is a deficient number, since it is larger than the sum of its proper divisors (19044593).

7979508487 is a wasteful number, since it uses less digits than its factorization.

7979508487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19044592.

The product of its (nonzero) digits is 35562240, while the sum is 64.

The square root of 7979508487 is about 89328.0946119417. The cubic root of 7979508487 is about 1998.2909138449.

The spelling of 7979508487 in words is "seven billion, nine hundred seventy-nine million, five hundred eight thousand, four hundred eighty-seven".