7922494440 has 576 divisors, whose sum is σ = 32227070400. Its totient is φ = 1726002432.

The previous prime is 7922494403. The next prime is 7922494469. The reversal of 7922494440 is 444942297.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 143 ways as a sum of consecutive naturals, for example, 27994539 + ... + 27994821.

It is an arithmetic number, because the mean of its divisors is an integer number (55949775).

Almost surely, 2^7922494440 is an apocalyptic number.

7922494440 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 7922494440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16113535200).

7922494440 is an abundant number, since it is smaller than the sum of its proper divisors (24304575960).

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

7922494440 is a wasteful number, since it uses less digits than its factorization.

7922494440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 7922494440 is about 89008.3953343728. The cubic root of 7922494440 is about 1993.5202323111.

The spelling of 7922494440 in words is "seven billion, nine hundred twenty-two million, four hundred ninety-four thousand, four hundred forty".