4977839 has 4 divisors (see below), whose sum is σ = 4983456. Its totient is φ = 4972224.

The previous prime is 4977823. The next prime is 4977853. The reversal of 4977839 is 9387794.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4977839 - 2⁴ = 4977823 is a prime.

It is a super-2 number, since 2×4977839² = 49557762219842, which contains 22 as substring.

It is a d-powerful number, because it can be written as 4⁷ + 9³ + 7² + 7² + 8³ + 3¹¹ + 9⁷ .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4977793 and 4977802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4977139) 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, 1154 + ... + 3359.

It is an arithmetic number, because the mean of its divisors is an integer number (1245864).

Almost surely, 2^4977839 is an apocalyptic number.

4977839 is a deficient number, since it is larger than the sum of its proper divisors (5617).

4977839 is a wasteful number, since it uses less digits than its factorization.

4977839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616.

The product of its digits is 381024, while the sum is 47.

The square root of 4977839 is about 2231.1071242771. The cubic root of 4977839 is about 170.7445886613.

It can be divided in two parts, 497 and 7839, that multiplied together give a palindrome (3895983).

The spelling of 4977839 in words is "four million, nine hundred seventy-seven thousand, eight hundred thirty-nine".