444021000423 has 64 divisors (see below), whose sum is σ = 816374479872. Its totient is φ = 207162593280.

The previous prime is 444021000421. The next prime is 444021000433. The reversal of 444021000423 is 324000120444.

It is a happy number.

It is not a de Polignac number, because 444021000423 - 2¹ = 444021000421 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 444021000393 and 444021000402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (444021000421) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1886986 + ... + 2109207.

It is an arithmetic number, because the mean of its divisors is an integer number (12755851248).

Almost surely, 2^444021000423 is an apocalyptic number.

444021000423 is a deficient number, since it is larger than the sum of its proper divisors (372353479449).

444021000423 is a wasteful number, since it uses less digits than its factorization.

444021000423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996264.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 444021000423 its reverse (324000120444), we get a palindrome (768021120867).

The spelling of 444021000423 in words is "four hundred forty-four billion, twenty-one million, four hundred twenty-three", and thus it is an aban number.