4779139 has 4 divisors (see below), whose sum is σ = 4788424. Its totient is φ = 4769856.

The previous prime is 4779119. The next prime is 4779143. The reversal of 4779139 is 9319774.

It is a semiprime because it is the product of two primes.

It is a 6-Lehmer number, since φ(4779139) divides (4779139-1)⁶.

It is a cyclic number.

It is not a de Polignac number, because 4779139 - 2⁵ = 4779107 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4779119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3822 + ... + 4915.

It is an arithmetic number, because the mean of its divisors is an integer number (1197106).

Almost surely, 2^4779139 is an apocalyptic number.

4779139 is a deficient number, since it is larger than the sum of its proper divisors (9285).

4779139 is an equidigital number, since it uses as much as digits as its factorization.

4779139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284.

The product of its digits is 47628, while the sum is 40.

The square root of 4779139 is about 2186.1241959230. The cubic root of 4779139 is about 168.4418052844.

The spelling of 4779139 in words is "four million, seven hundred seventy-nine thousand, one hundred thirty-nine".