979729 has 4 divisors (see below), whose sum is σ = 993600. Its totient is φ = 965860.

The previous prime is 979717. The next prime is 979747. The reversal of 979729 is 927979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 979729 - 2¹¹ = 977681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6829 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (248400).

2⁹⁷⁹⁷²⁹ is an apocalyptic number.

It is an amenable number.

979729 is a deficient number, since it is larger than the sum of its proper divisors (13871).

979729 is a wasteful number, since it uses less digits than its factorization.

979729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13870.

The product of its digits is 71442, while the sum is 43.

The square root of 979729 is about 989.8126085275. The cubic root of 979729 is about 99.3196821723.

The spelling of 979729 in words is "nine hundred seventy-nine thousand, seven hundred twenty-nine".