4390781472 has 384 divisors, whose sum is σ = 16489267200. Its totient is φ = 1103155200.

The previous prime is 4390781431. The next prime is 4390781537. The reversal of 4390781472 is 2741870934.

4390781472 is a `hidden beast` number, since 439 + 0 + 78 + 147 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2061304 + ... + 2063432.

It is an arithmetic number, because the mean of its divisors is an integer number (42940800).

Almost surely, 2^4390781472 is an apocalyptic number.

4390781472 is a gapful number since it is divisible by the number (42) 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 4390781472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8244633600).

4390781472 is an abundant number, since it is smaller than the sum of its proper divisors (12098485728).

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

4390781472 is a wasteful number, since it uses less digits than its factorization.

4390781472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197 (or 2183 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 4390781472 is about 66262.9721035813. The cubic root of 4390781472 is about 1637.4973568087.

The spelling of 4390781472 in words is "four billion, three hundred ninety million, seven hundred eighty-one thousand, four hundred seventy-two".