4779639 has 6 divisors (see below), whose sum is σ = 6903936. Its totient is φ = 3186420.

The previous prime is 4779631. The next prime is 4779661. The reversal of 4779639 is 9369774.

4779639 is a `hidden beast` number, since 4 + 7 + 7 + 9 + 639 = 666.

It is not a de Polignac number, because 4779639 - 2³ = 4779631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4779594 and 4779603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4779631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 265527 + ... + 265544.

It is an arithmetic number, because the mean of its divisors is an integer number (1150656).

Almost surely, 2^4779639 is an apocalyptic number.

4779639 is a deficient number, since it is larger than the sum of its proper divisors (2124297).

4779639 is a wasteful number, since it uses less digits than its factorization.

4779639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531077 (or 531074 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 4779639 is about 2186.2385505704. The cubic root of 4779639 is about 168.4476792829.

The spelling of 4779639 in words is "four million, seven hundred seventy-nine thousand, six hundred thirty-nine".