4279993656 has 64 divisors (see below), whose sum is σ = 11286854400. Its totient is φ = 1348731648.

The previous prime is 4279993621. The next prime is 4279993699. The reversal of 4279993656 is 6563999724.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 4279993656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212436 + ... + 231708.

It is an arithmetic number, because the mean of its divisors is an integer number (176357100).

Almost surely, 2^4279993656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4279993656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5643427200).

4279993656 is an abundant number, since it is smaller than the sum of its proper divisors (7006860744).

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

4279993656 is a wasteful number, since it uses less digits than its factorization.

4279993656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19788 (or 19784 counting only the distinct ones).

The product of its digits is 22044960, while the sum is 60.

The square root of 4279993656 is about 65421.6604497318. The cubic root of 4279993656 is about 1623.6074736655.

The spelling of 4279993656 in words is "four billion, two hundred seventy-nine million, nine hundred ninety-three thousand, six hundred fifty-six".