7899858792 has 288 divisors, whose sum is σ = 26620513920. Its totient is φ = 2102768640.

The previous prime is 7899858787. The next prime is 7899858793. The reversal of 7899858792 is 2978589987.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 7899858792.

It is not an unprimeable number, because it can be changed into a prime (7899858793) 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 71 ways as a sum of consecutive naturals, for example, 6416817 + ... + 6418047.

It is an arithmetic number, because the mean of its divisors is an integer number (92432340).

Almost surely, 2^7899858792 is an apocalyptic number.

7899858792 is a gapful number since it is divisible by the number (72) 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 7899858792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13310256960).

7899858792 is an abundant number, since it is smaller than the sum of its proper divisors (18720655128).

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

7899858792 is a wasteful number, since it uses less digits than its factorization.

7899858792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381 (or 1367 counting only the distinct ones).

The product of its digits is 182891520, while the sum is 72.

The square root of 7899858792 is about 88881.1498125446. The cubic root of 7899858792 is about 1991.6198347918.

The spelling of 7899858792 in words is "seven billion, eight hundred ninety-nine million, eight hundred fifty-eight thousand, seven hundred ninety-two".