3978754440 has 64 divisors (see below), whose sum is σ = 11940687360. Its totient is φ = 1060608000.

The previous prime is 3978754433. The next prime is 3978754453. The reversal of 3978754440 is 444578793.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 475977 + ... + 484263.

It is an arithmetic number, because the mean of its divisors is an integer number (186573240).

Almost surely, 2^3978754440 is an apocalyptic number.

3978754440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3978754440 is an abundant number, since it is smaller than the sum of its proper divisors (7961932920).

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

3978754440 is a wasteful number, since it uses less digits than its factorization.

3978754440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12302 (or 12298 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 51.

The square root of 3978754440 is about 63077.3686832290. The cubic root of 3978754440 is about 1584.5856261031.

The spelling of 3978754440 in words is "three billion, nine hundred seventy-eight million, seven hundred fifty-four thousand, four hundred forty".