7979055940 has 48 divisors (see below), whose sum is σ = 17356207680. Its totient is φ = 3077585280.

The previous prime is 7979055907. The next prime is 7979055943. The reversal of 7979055940 is 495509797.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (7979055943) 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 in 15 ways as a sum of consecutive naturals, for example, 461899 + ... + 478861.

It is an arithmetic number, because the mean of its divisors is an integer number (361587660).

Almost surely, 2^7979055940 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7979055940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8678103840).

7979055940 is an abundant number, since it is smaller than the sum of its proper divisors (9377151740).

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

7979055940 is a wasteful number, since it uses less digits than its factorization.

7979055940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17812 (or 17810 counting only the distinct ones).

The product of its (nonzero) digits is 3572100, while the sum is 55.

The square root of 7979055940 is about 89325.5615151677. The cubic root of 7979055940 is about 1998.2531363446.

The spelling of 7979055940 in words is "seven billion, nine hundred seventy-nine million, fifty-five thousand, nine hundred forty".