4021444399 has 8 divisors (see below), whose sum is σ = 4603225088. Its totient is φ = 3441485880.

The previous prime is 4021444391. The next prime is 4021444421. The reversal of 4021444399 is 9934441204.

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

It is not a de Polignac number, because 4021444399 - 2³ = 4021444391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021444391) 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, 450807 + ... + 459640.

It is an arithmetic number, because the mean of its divisors is an integer number (575403136).

Almost surely, 2^4021444399 is an apocalyptic number.

4021444399 is a deficient number, since it is larger than the sum of its proper divisors (581780689).

4021444399 is an equidigital number, since it uses as much as digits as its factorization.

4021444399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911085.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 4021444399 is about 63414.8594495013. The cubic root of 4021444399 is about 1590.2327361279.

The spelling of 4021444399 in words is "four billion, twenty-one million, four hundred forty-four thousand, three hundred ninety-nine".