4021444420392 has 64 divisors (see below), whose sum is σ = 11580312453120. Its totient is φ = 1139936995008.

The previous prime is 4021444420379. The next prime is 4021444420393. The reversal of 4021444420392 is 2930244441204.

It is a self number, because there is not a number n which added to its sum of digits gives 4021444420392.

It is not an unprimeable number, because it can be changed into a prime (4021444420393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94219488 + ... + 94262159.

It is an arithmetic number, because the mean of its divisors is an integer number (180942382080).

Almost surely, 2^{4021444420392} is an apocalyptic number.

4021444420392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

4021444420392 is an abundant number, since it is smaller than the sum of its proper divisors (7558868032728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021444420392 is a wasteful number, since it uses less digits than its factorization.

4021444420392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188481790 (or 188481786 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

Adding to 4021444420392 its reverse (2930244441204), we get a palindrome (6951688861596).

The spelling of 4021444420392 in words is "four trillion, twenty-one billion, four hundred forty-four million, four hundred twenty thousand, three hundred ninety-two".