7964394940 has 36 divisors (see below), whose sum is σ = 17766952056. Its totient is φ = 2998358272.

The previous prime is 7964394937. The next prime is 7964394953. The reversal of 7964394940 is 494934697.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 683182 + ... + 694741.

It is an arithmetic number, because the mean of its divisors is an integer number (493526446).

Almost surely, 2^7964394940 is an apocalyptic number.

It is an amenable number.

7964394940 is an abundant number, since it is smaller than the sum of its proper divisors (9802557116).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7964394940 is a wasteful number, since it uses less digits than its factorization.

7964394940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1377966 (or 1377947 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 55.

The square root of 7964394940 is about 89243.4588079149. The cubic root of 7964394940 is about 1997.0284989439.

The spelling of 7964394940 in words is "seven billion, nine hundred sixty-four million, three hundred ninety-four thousand, nine hundred forty".