4394978560 has 216 divisors, whose sum is σ = 12415092480. Its totient is φ = 1486098432.

The previous prime is 4394978513. The next prime is 4394978561. The reversal of 4394978560 is 658794934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4394978561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4954437 + ... + 4955323.

It is an arithmetic number, because the mean of its divisors is an integer number (57477280).

Almost surely, 2^4394978560 is an apocalyptic number.

4394978560 is a gapful number since it is divisible by the number (40) 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 4394978560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6207546240).

4394978560 is an abundant number, since it is smaller than the sum of its proper divisors (8020113920).

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

4394978560 is an equidigital number, since it uses as much as digits as its factorization.

4394978560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 55.

The square root of 4394978560 is about 66294.6344736887. The cubic root of 4394978560 is about 1638.0189444323.

The spelling of 4394978560 in words is "four billion, three hundred ninety-four million, nine hundred seventy-eight thousand, five hundred sixty".