979789 has 4 divisors (see below), whose sum is σ = 985824. Its totient is φ = 973756.

The previous prime is 979787. The next prime is 979807. The reversal of 979789 is 987979.

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 979789 - 2¹ = 979787 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979787) 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, 2767 + ... + 3100.

It is an arithmetic number, because the mean of its divisors is an integer number (246456).

2⁹⁷⁹⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

979789 is a deficient number, since it is larger than the sum of its proper divisors (6035).

979789 is a wasteful number, since it uses less digits than its factorization.

979789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6034.

The product of its digits is 285768, while the sum is 49.

The square root of 979789 is about 989.8429168307. The cubic root of 979789 is about 99.3217096239.

The spelling of 979789 in words is "nine hundred seventy-nine thousand, seven hundred eighty-nine".