2447979840 has 224 divisors, whose sum is σ = 8674364160. Its totient is φ = 649893888.

The previous prime is 2447979827. The next prime is 2447979851. The reversal of 2447979840 is 489797442.

It is a happy number.

2447979840 is a `hidden beast` number, since 24 + 479 + 79 + 84 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2531037 + ... + 2532003.

It is an arithmetic number, because the mean of its divisors is an integer number (38724840).

Almost surely, 2^2447979840 is an apocalyptic number.

2447979840 is a gapful number since it is divisible by the number (20) 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 2447979840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4337182080).

2447979840 is an abundant number, since it is smaller than the sum of its proper divisors (6226384320).

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

2447979840 is a wasteful number, since it uses less digits than its factorization.

2447979840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1270 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The square root of 2447979840 is about 49477.0637770675. The cubic root of 2447979840 is about 1347.7291204922.

The spelling of 2447979840 in words is "two billion, four hundred forty-seven million, nine hundred seventy-nine thousand, eight hundred forty".