7921089792 has 720 divisors, whose sum is σ = 30414916224. Its totient is φ = 2007244800.

The previous prime is 7921089773. The next prime is 7921089793. The reversal of 7921089792 is 2979801297.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7921089793) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 193197292 + ... + 193197332.

Almost surely, 2^7921089792 is an apocalyptic number.

7921089792 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 7921089792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15207458112).

7921089792 is an abundant number, since it is smaller than the sum of its proper divisors (22493826432).

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

7921089792 is an equidigital number, since it uses as much as digits as its factorization.

7921089792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 1143072, while the sum is 54.

The square root of 7921089792 is about 89000.5044480086. The cubic root of 7921089792 is about 1993.4024091627.

The spelling of 7921089792 in words is "seven billion, nine hundred twenty-one million, eighty-nine thousand, seven hundred ninety-two".