7972078394 has 32 divisors (see below), whose sum is σ = 13781702016. Its totient is φ = 3387890880.

The previous prime is 7972078363. The next prime is 7972078441. The reversal of 7972078394 is 4938702797.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 957389 + ... + 965679.

It is an arithmetic number, because the mean of its divisors is an integer number (430678188).

Almost surely, 2^7972078394 is an apocalyptic number.

7972078394 is a deficient number, since it is larger than the sum of its proper divisors (5809623622).

7972078394 is a wasteful number, since it uses less digits than its factorization.

7972078394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8870.

The product of its (nonzero) digits is 5334336, while the sum is 56.

The square root of 7972078394 is about 89286.4961458338. The cubic root of 7972078394 is about 1997.6704872386.

The spelling of 7972078394 in words is "seven billion, nine hundred seventy-two million, seventy-eight thousand, three hundred ninety-four".