979543 has 2 divisors, whose sum is σ = 979544. Its totient is φ = 979542.

The previous prime is 979541. The next prime is 979549. The reversal of 979543 is 345979.

It is a weak prime.

It is an emirp because it is prime and its reverse (345979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 979543 - 2¹ = 979541 is a prime.

Together with 979541, it forms a pair of twin primes.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979541) 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 as a sum of consecutive naturals, namely, 489771 + 489772.

It is an arithmetic number, because the mean of its divisors is an integer number (489772).

2⁹⁷⁹⁵⁴³ is an apocalyptic number.

979543 is a deficient number, since it is larger than the sum of its proper divisors (1).

979543 is an equidigital number, since it uses as much as digits as its factorization.

979543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 37.

The square root of 979543 is about 989.7186468891. The cubic root of 979543 is about 99.3133965464.

The spelling of 979543 in words is "nine hundred seventy-nine thousand, five hundred forty-three".