1444433340 has 96 divisors (see below), whose sum is σ = 4648250880. Its totient is φ = 328294656.

The previous prime is 1444433329. The next prime is 1444433351. The reversal of 1444433340 is 433344441.

It is an interprime number because it is at equal distance from previous prime (1444433329) and next prime (1444433351).

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 = 1444433298 and 1444433307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65574 + ... + 84786.

It is an arithmetic number, because the mean of its divisors is an integer number (48419280).

Almost surely, 2^1444433340 is an apocalyptic number.

1444433340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1444433340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2324125440).

1444433340 is an abundant number, since it is smaller than the sum of its proper divisors (3203817540).

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

1444433340 is a wasteful number, since it uses less digits than its factorization.

1444433340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19411 (or 19409 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

The square root of 1444433340 is about 38005.7014143931. The cubic root of 1444433340 is about 1130.4009175984.

Adding to 1444433340 its reverse (433344441), we get a palindrome (1877777781).

The spelling of 1444433340 in words is "one billion, four hundred forty-four million, four hundred thirty-three thousand, three hundred forty".