1440341340 has 24 divisors (see below), whose sum is σ = 4032955920. Its totient is φ = 384091008.

The previous prime is 1440341339. The next prime is 1440341359. The reversal of 1440341340 is 431430441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440341340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12002785 + ... + 12002904.

It is an arithmetic number, because the mean of its divisors is an integer number (168039830).

Almost surely, 2^1440341340 is an apocalyptic number.

1440341340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440341340 is an abundant number, since it is smaller than the sum of its proper divisors (2592614580).

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

1440341340 is a wasteful number, since it uses less digits than its factorization.

1440341340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24005701 (or 24005699 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1440341340 is about 37951.8292049277. The cubic root of 1440341340 is about 1129.3324535075.

Adding to 1440341340 its reverse (431430441), we get a palindrome (1871771781).

The spelling of 1440341340 in words is "one billion, four hundred forty million, three hundred forty-one thousand, three hundred forty".