444146340 has 48 divisors (see below), whose sum is σ = 1356667200. Its totient is φ = 107671680.

The previous prime is 444146323. The next prime is 444146347. The reversal of 444146340 is 43641444.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 444146298 and 444146307.

It is not an unprimeable number, because it can be changed into a prime (444146347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335815 + ... + 337134.

It is an arithmetic number, because the mean of its divisors is an integer number (28263900).

Almost surely, 2^444146340 is an apocalyptic number.

It is an amenable number.

444146340 is an abundant number, since it is smaller than the sum of its proper divisors (912520860).

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

444146340 is a wasteful number, since it uses less digits than its factorization.

444146340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672972 (or 672970 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The square root of 444146340 is about 21074.7797141512. The cubic root of 444146340 is about 762.9721680056.

Adding to 444146340 its reverse (43641444), we get a palindrome (487787784).

The spelling of 444146340 in words is "four hundred forty-four million, one hundred forty-six thousand, three hundred forty".