4379728123 has 2 divisors, whose sum is σ = 4379728124. Its totient is φ = 4379728122.

The previous prime is 4379728121. The next prime is 4379728127. The reversal of 4379728123 is 3218279734.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4379728123 - 2¹ = 4379728121 is a prime.

Together with 4379728121, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (4379728121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2189864061 + 2189864062.

It is an arithmetic number, because the mean of its divisors is an integer number (2189864062).

Almost surely, 2^4379728123 is an apocalyptic number.

4379728123 is a deficient number, since it is larger than the sum of its proper divisors (1).

4379728123 is an equidigital number, since it uses as much as digits as its factorization.

4379728123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 46.

The square root of 4379728123 is about 66179.5143756737. The cubic root of 4379728123 is about 1636.1221240755.

The spelling of 4379728123 in words is "four billion, three hundred seventy-nine million, seven hundred twenty-eight thousand, one hundred twenty-three".