679000121839 has 16 divisors (see below), whose sum is σ = 734088307680. Its totient is φ = 624324879360.

The previous prime is 679000121743. The next prime is 679000121851. The reversal of 679000121839 is 938121000976.

It is a happy number.

It is not a de Polignac number, because 679000121839 - 2⁷ = 679000121711 is a prime.

It is a super-2 number, since 2×679000121839² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679000128839) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3356119 + ... + 3552679.

It is an arithmetic number, because the mean of its divisors is an integer number (45880519230).

Almost surely, 2^679000121839 is an apocalyptic number.

679000121839 is a deficient number, since it is larger than the sum of its proper divisors (55088185841).

679000121839 is a wasteful number, since it uses less digits than its factorization.

679000121839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197610.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 679000121839 in words is "six hundred seventy-nine billion, one hundred twenty-one thousand, eight hundred thirty-nine".