4779640 has 48 divisors (see below), whose sum is σ = 11384280. Its totient is φ = 1805760.

The previous prime is 4779631. The next prime is 4779661. The reversal of 4779640 is 469774.

It is a self number, because there is not a number n which added to its sum of digits gives 4779640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14275 + ... + 14605.

Almost surely, 2^4779640 is an apocalyptic number.

4779640 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 4779640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5692140).

4779640 is an abundant number, since it is smaller than the sum of its proper divisors (6604640).

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

4779640 is a wasteful number, since it uses less digits than its factorization.

4779640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 4779640 is about 2186.2387792737. The cubic root of 4779640 is about 168.4476910305.

The spelling of 4779640 in words is "four million, seven hundred seventy-nine thousand, six hundred forty".