679397439 has 8 divisors (see below), whose sum is σ = 1035272320. Its totient is φ = 388227096.

The previous prime is 679397417. The next prime is 679397473. The reversal of 679397439 is 934793976.

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

It is not a de Polignac number, because 679397439 - 2¹³ = 679389247 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 (679397479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16176109 + ... + 16176150.

It is an arithmetic number, because the mean of its divisors is an integer number (129409040).

Almost surely, 2^679397439 is an apocalyptic number.

679397439 is a deficient number, since it is larger than the sum of its proper divisors (355874881).

679397439 is a wasteful number, since it uses less digits than its factorization.

679397439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32352269.

The product of its digits is 7715736, while the sum is 57.

The square root of 679397439 is about 26065.2534804479. The cubic root of 679397439 is about 879.1061166847.

The spelling of 679397439 in words is "six hundred seventy-nine million, three hundred ninety-seven thousand, four hundred thirty-nine".