4879640 has 32 divisors (see below), whose sum is σ = 11238480. Its totient is φ = 1905792.

The previous prime is 4879639. The next prime is 4879643. The reversal of 4879640 is 469784.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 4879594 and 4879603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4879643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302 + ... + 3138.

Almost surely, 2^4879640 is an apocalyptic number.

4879640 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 4879640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5619240).

4879640 is an abundant number, since it is smaller than the sum of its proper divisors (6358840).

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

4879640 is a wasteful number, since it uses less digits than its factorization.

4879640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 4879640 is about 2208.9907197632. The cubic root of 4879640 is about 169.6143507199.

The spelling of 4879640 in words is "four million, eight hundred seventy-nine thousand, six hundred forty".