839479 has 4 divisors (see below), whose sum is σ = 844984. Its totient is φ = 833976.

The previous prime is 839473. The next prime is 839483. The reversal of 839479 is 974938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 974938 = 2 ⋅487469.

It is a cyclic number.

It is not a de Polignac number, because 839479 - 2³ = 839471 is a prime.

It is a Duffinian number.

839479 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2517 + ... + 2830.

It is an arithmetic number, because the mean of its divisors is an integer number (211246).

2⁸³⁹⁴⁷⁹ is an apocalyptic number.

839479 is a deficient number, since it is larger than the sum of its proper divisors (5505).

839479 is a wasteful number, since it uses less digits than its factorization.

839479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5504.

The product of its digits is 54432, while the sum is 40.

The square root of 839479 is about 916.2308661031. The cubic root of 839479 is about 94.3343682817.

The spelling of 839479 in words is "eight hundred thirty-nine thousand, four hundred seventy-nine".