4979840 has 64 divisors (see below), whose sum is σ = 12337920. Its totient is φ = 1920000.

The previous prime is 4979839. The next prime is 4979879. The reversal of 4979840 is 489794.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19715 + ... + 19965.

It is an arithmetic number, because the mean of its divisors is an integer number (192780).

Almost surely, 2^4979840 is an apocalyptic number.

4979840 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 4979840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6168960).

4979840 is an abundant number, since it is smaller than the sum of its proper divisors (7358080).

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

4979840 is a wasteful number, since it uses less digits than its factorization.

4979840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 4979840 is about 2231.5555112970. Note that the first 4 decimals coincide. The cubic root of 4979840 is about 170.7674643276.

The spelling of 4979840 in words is "four million, nine hundred seventy-nine thousand, eight hundred forty".