679444038 has 144 divisors (see below), whose sum is σ = 1884748320. Its totient is φ = 178879104.

The previous prime is 679444013. The next prime is 679444039. The reversal of 679444038 is 830444976.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 679443984 and 679444002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679444039) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1193818 + ... + 1194386.

It is an arithmetic number, because the mean of its divisors is an integer number (13088530).

Almost surely, 2^679444038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 679444038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942374160).

679444038 is an abundant number, since it is smaller than the sum of its proper divisors (1205304282).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

679444038 is an equidigital number, since it uses as much as digits as its factorization.

679444038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 679444038 is about 26066.1473562934. The cubic root of 679444038 is about 879.1262151460.

The spelling of 679444038 in words is "six hundred seventy-nine million, four hundred forty-four thousand, thirty-eight".