4399042423 has 2 divisors, whose sum is σ = 4399042424. Its totient is φ = 4399042422.

The previous prime is 4399042379. The next prime is 4399042429. The reversal of 4399042423 is 3242409934.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4399042423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4399042429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2199521211 + 2199521212.

It is an arithmetic number, because the mean of its divisors is an integer number (2199521212).

Almost surely, 2^4399042423 is an apocalyptic number.

4399042423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4399042423 is an equidigital number, since it uses as much as digits as its factorization.

4399042423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 40.

The square root of 4399042423 is about 66325.2774061293. The cubic root of 4399042423 is about 1638.5236593640.

The spelling of 4399042423 in words is "four billion, three hundred ninety-nine million, forty-two thousand, four hundred twenty-three".