8474839 has 4 divisors (see below), whose sum is σ = 8490456. Its totient is φ = 8459224.

The previous prime is 8474831. The next prime is 8474849. The reversal of 8474839 is 9384748.

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

It is a cyclic number.

It is not a de Polignac number, because 8474839 - 2³ = 8474831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8474795 and 8474804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8474831) 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, 6964 + ... + 8089.

It is an arithmetic number, because the mean of its divisors is an integer number (2122614).

Almost surely, 2^8474839 is an apocalyptic number.

8474839 is a deficient number, since it is larger than the sum of its proper divisors (15617).

8474839 is a wasteful number, since it uses less digits than its factorization.

8474839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15616.

The product of its digits is 193536, while the sum is 43.

The square root of 8474839 is about 2911.1576735038. The cubic root of 8474839 is about 203.8811864209.

Subtracting 8474839 from its reverse (9384748), we obtain a palindrome (909909).

The spelling of 8474839 in words is "eight million, four hundred seventy-four thousand, eight hundred thirty-nine".