7986684946 has 4 divisors (see below), whose sum is σ = 11980027422. Its totient is φ = 3993342472.

The previous prime is 7986684943. The next prime is 7986684947. The reversal of 7986684946 is 6494866897.

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., 7623210721 + 363474225 = 87311^2 + 19065^2 .

It is a super-3 number, since 3×7986684946³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (7986684943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1996671235 + ... + 1996671238.

Almost surely, 2^7986684946 is an apocalyptic number.

7986684946 is a deficient number, since it is larger than the sum of its proper divisors (3993342476).

7986684946 is a wasteful number, since it uses less digits than its factorization.

7986684946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3993342475.

The product of its digits is 125411328, while the sum is 67.

The square root of 7986684946 is about 89368.2546881162. The cubic root of 7986684946 is about 1998.8897960042.

The spelling of 7986684946 in words is "seven billion, nine hundred eighty-six million, six hundred eighty-four thousand, nine hundred forty-six".