7979561314 has 4 divisors (see below), whose sum is σ = 11969341974. Its totient is φ = 3989780656.

The previous prime is 7979561311. The next prime is 7979561321. The reversal of 7979561314 is 4131659797.

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

It can be written as a sum of positive squares in only one way, i.e., 4155994089 + 3823567225 = 64467^2 + 61835^2 .

It is not an unprimeable number, because it can be changed into a prime (7979561311) 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 as a sum of consecutive naturals, namely, 1994890327 + ... + 1994890330.

Almost surely, 2^7979561314 is an apocalyptic number.

7979561314 is a deficient number, since it is larger than the sum of its proper divisors (3989780660).

7979561314 is a wasteful number, since it uses less digits than its factorization.

7979561314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3989780659.

The product of its digits is 1428840, while the sum is 52.

The square root of 7979561314 is about 89328.3903022997. The cubic root of 7979561314 is about 1998.2953236187.

The spelling of 7979561314 in words is "seven billion, nine hundred seventy-nine million, five hundred sixty-one thousand, three hundred fourteen".