679399 has 8 divisors (see below), whose sum is σ = 787968. Its totient is φ = 573720.

The previous prime is 679381. The next prime is 679403. The reversal of 679399 is 993976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 679399 - 2¹⁵ = 646631 is a prime.

It is a d-powerful number, because it can be written as 6⁵ + 7⁴ + 3⁹ + 9⁵ + 9⁵ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679309) 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 7 ways as a sum of consecutive naturals, for example, 187 + ... + 1180.

It is an arithmetic number, because the mean of its divisors is an integer number (98496).

2⁶⁷⁹³⁹⁹ is an apocalyptic number.

679399 is a deficient number, since it is larger than the sum of its proper divisors (108569).

679399 is a wasteful number, since it uses less digits than its factorization.

679399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445.

The product of its digits is 91854, while the sum is 43.

The square root of 679399 is about 824.2566347928. The cubic root of 679399 is about 87.9106789969.

The spelling of 679399 in words is "six hundred seventy-nine thousand, three hundred ninety-nine".