7939664914 has 4 divisors (see below), whose sum is σ = 11909497374. Its totient is φ = 3969832456.

The previous prime is 7939664911. The next prime is 7939664917. The reversal of 7939664914 is 4194669397.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4194669397 = 6269 ⋅669113.

It is an interprime number because it is at equal distance from previous prime (7939664911) and next prime (7939664917).

It can be written as a sum of positive squares in only one way, i.e., 7676738689 + 262926225 = 87617^2 + 16215^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (7939664911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1984916227 + ... + 1984916230.

Almost surely, 2^7939664914 is an apocalyptic number.

7939664914 is a deficient number, since it is larger than the sum of its proper divisors (3969832460).

7939664914 is a wasteful number, since it uses less digits than its factorization.

7939664914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3969832459.

The product of its digits is 8817984, while the sum is 58.

The square root of 7939664914 is about 89104.7973680430. The cubic root of 7939664914 is about 1994.9593829290.

The spelling of 7939664914 in words is "seven billion, nine hundred thirty-nine million, six hundred sixty-four thousand, nine hundred fourteen".