402144444444 has 48 divisors (see below), whose sum is σ = 1011814030080. Its totient is φ = 123895589760.

The previous prime is 402144444439. The next prime is 402144444521. The reversal of 402144444444 is 444444441204.

402144444444 is a modest number, since divided by 444444 gives 402144 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21500304 + ... + 21518999.

It is an arithmetic number, because the mean of its divisors is an integer number (21079458960).

Almost surely, 2^402144444444 is an apocalyptic number.

It is an amenable number.

402144444444 is an abundant number, since it is smaller than the sum of its proper divisors (609669585636).

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

402144444444 is a wasteful number, since it uses less digits than its factorization.

402144444444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43019370 (or 43019368 counting only the distinct ones).

The product of its (nonzero) digits is 524288, while the sum is 39.

Adding to 402144444444 its reverse (444444441204), we get a palindrome (846588885648).

The spelling of 402144444444 in words is "four hundred two billion, one hundred forty-four million, four hundred forty-four thousand, four hundred forty-four".