402144444044 has 48 divisors (see below), whose sum is σ = 853349156352. Its totient is φ = 161876351232.

The previous prime is 402144444019. The next prime is 402144444047. The reversal of 402144444044 is 440444441204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402144443995 and 402144444013.

It is not an unprimeable number, because it can be changed into a prime (402144444047) 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, 635582 + ... + 1099205.

It is an arithmetic number, because the mean of its divisors is an integer number (17778107424).

Almost surely, 2^402144444044 is an apocalyptic number.

It is an amenable number.

402144444044 is an abundant number, since it is smaller than the sum of its proper divisors (451204712308).

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

402144444044 is a wasteful number, since it uses less digits than its factorization.

402144444044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735302 (or 1735300 counting only the distinct ones).

The product of its (nonzero) digits is 131072, while the sum is 35.

Adding to 402144444044 its reverse (440444441204), we get a palindrome (842588885248).

The spelling of 402144444044 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, forty-four".