7878484446 has 64 divisors (see below), whose sum is σ = 18845568000. Its totient is φ = 2146864896.

The previous prime is 7878484441. The next prime is 7878484451. The reversal of 7878484446 is 6444848787.

It is an interprime number because it is at equal distance from previous prime (7878484441) and next prime (7878484451).

It is a self number, because there is not a number n which added to its sum of digits gives 7878484446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7878484441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 325450 + ... + 348818.

It is an arithmetic number, because the mean of its divisors is an integer number (294462000).

Almost surely, 2^7878484446 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7878484446, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9422784000).

7878484446 is an abundant number, since it is smaller than the sum of its proper divisors (10967083554).

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

7878484446 is a wasteful number, since it uses less digits than its factorization.

7878484446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23753.

The product of its digits is 38535168, while the sum is 60.

The square root of 7878484446 is about 88760.8272043473. The cubic root of 7878484446 is about 1989.8219958118.

The spelling of 7878484446 in words is "seven billion, eight hundred seventy-eight million, four hundred eighty-four thousand, four hundred forty-six".