7929479880 has 192 divisors, whose sum is σ = 30747168000. Its totient is φ = 1812440448.

The previous prime is 7929479867. The next prime is 7929479891. The reversal of 7929479880 is 889749297.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

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 in 47 ways as a sum of consecutive naturals, for example, 22000 + ... + 127839.

It is an arithmetic number, because the mean of its divisors is an integer number (160141500).

Almost surely, 2^7929479880 is an apocalyptic number.

7929479880 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7929479880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15373584000).

7929479880 is an abundant number, since it is smaller than the sum of its proper divisors (22817688120).

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

7929479880 is a wasteful number, since it uses less digits than its factorization.

7929479880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149873 (or 149856 counting only the distinct ones).

The product of its (nonzero) digits is 18289152, while the sum is 63.

The square root of 7929479880 is about 89047.6270318306. The cubic root of 7929479880 is about 1994.1059706051.

The spelling of 7929479880 in words is "seven billion, nine hundred twenty-nine million, four hundred seventy-nine thousand, eight hundred eighty".