4220979840 has 768 divisors, whose sum is σ = 18819440640. Its totient is φ = 846028800.

The previous prime is 4220979823. The next prime is 4220979853. The reversal of 4220979840 is 489790224.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13748967 + ... + 13749273.

It is an arithmetic number, because the mean of its divisors is an integer number (24504480).

Almost surely, 2^4220979840 is an apocalyptic number.

4220979840 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 4220979840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9409720320).

4220979840 is an abundant number, since it is smaller than the sum of its proper divisors (14598460800).

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

4220979840 is a wasteful number, since it uses less digits than its factorization.

4220979840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 366 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 4220979840 is about 64969.0683325535. The cubic root of 4220979840 is about 1616.1106515090.

The spelling of 4220979840 in words is "four billion, two hundred twenty million, nine hundred seventy-nine thousand, eight hundred forty".