1443400340 has 48 divisors (see below), whose sum is σ = 3118507392. Its totient is φ = 560774016.

The previous prime is 1443400337. The next prime is 1443400369. The reversal of 1443400340 is 430043441.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 536639 + ... + 539321.

It is an arithmetic number, because the mean of its divisors is an integer number (64968904).

Almost surely, 2^1443400340 is an apocalyptic number.

1443400340 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 1443400340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1559253696).

1443400340 is an abundant number, since it is smaller than the sum of its proper divisors (1675107052).

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

1443400340 is a wasteful number, since it uses less digits than its factorization.

1443400340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3456 (or 3454 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 1443400340 is about 37992.1089175108. The cubic root of 1443400340 is about 1130.1313810747.

Adding to 1443400340 its reverse (430043441), we get a palindrome (1873443781).

The spelling of 1443400340 in words is "one billion, four hundred forty-three million, four hundred thousand, three hundred forty".