4006444423 has 8 divisors (see below), whose sum is σ = 4086311328. Its totient is φ = 3926735904.

The previous prime is 4006444391. The next prime is 4006444441. The reversal of 4006444423 is 3244446004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4006444423 - 2⁵ = 4006444391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006444523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165 + ... + 90337.

It is an arithmetic number, because the mean of its divisors is an integer number (510788916).

Almost surely, 2^4006444423 is an apocalyptic number.

4006444423 is a deficient number, since it is larger than the sum of its proper divisors (79866905).

4006444423 is an equidigital number, since it uses as much as digits as its factorization.

4006444423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79193.

The product of its (nonzero) digits is 36864, while the sum is 31.

The square root of 4006444423 is about 63296.4803365874. The cubic root of 4006444423 is about 1588.2530848810.

The spelling of 4006444423 in words is "four billion, six million, four hundred forty-four thousand, four hundred twenty-three".