1444421330 has 16 divisors (see below), whose sum is σ = 2836318464. Its totient is φ = 525244080.

The previous prime is 1444421273. The next prime is 1444421369. The reversal of 1444421330 is 331244441.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444421330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6565442 + ... + 6565661.

It is an arithmetic number, because the mean of its divisors is an integer number (177269904).

Almost surely, 2^1444421330 is an apocalyptic number.

1444421330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1444421330 is a deficient number, since it is larger than the sum of its proper divisors (1391897134).

1444421330 is a wasteful number, since it uses less digits than its factorization.

1444421330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131121.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1444421330 is about 38005.5434114551. The cubic root of 1444421330 is about 1130.3977846160.

Adding to 1444421330 its reverse (331244441), we get a palindrome (1775665771).

The spelling of 1444421330 in words is "one billion, four hundred forty-four million, four hundred twenty-one thousand, three hundred thirty".