979439 has 2 divisors, whose sum is σ = 979440. Its totient is φ = 979438.

The previous prime is 979423. The next prime is 979457. The reversal of 979439 is 934979.

It is a weak prime.

It is an emirp because it is prime and its reverse (934979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979439 - 2⁴ = 979423 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 979396 and 979405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (973439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489719 + 489720.

It is an arithmetic number, because the mean of its divisors is an integer number (489720).

2⁹⁷⁹⁴³⁹ is an apocalyptic number.

979439 is a deficient number, since it is larger than the sum of its proper divisors (1).

979439 is an equidigital number, since it uses as much as digits as its factorization.

979439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61236, while the sum is 41.

The square root of 979439 is about 989.6661053103. Note that the first 3 decimals coincide. The cubic root of 979439 is about 99.3098816560.

The spelling of 979439 in words is "nine hundred seventy-nine thousand, four hundred thirty-nine".