1440414321 has 4 divisors (see below), whose sum is σ = 1920552432. Its totient is φ = 960276212.

The previous prime is 1440414293. The next prime is 1440414331. The reversal of 1440414321 is 1234140441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1440414321 - 2⁶ = 1440414257 is a prime.

It is a super-2 number, since 2×1440414321² = 4149586832283782082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1440414291 and 1440414300.

It is not an unprimeable number, because it can be changed into a prime (1440414331) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 240069051 + ... + 240069056.

It is an arithmetic number, because the mean of its divisors is an integer number (480138108).

Almost surely, 2^1440414321 is an apocalyptic number.

It is an amenable number.

1440414321 is a deficient number, since it is larger than the sum of its proper divisors (480138111).

1440414321 is an equidigital number, since it uses as much as digits as its factorization.

1440414321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480138110.

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 1440414321 is about 37952.7906879059. The cubic root of 1440414321 is about 1129.3515273242.

Adding to 1440414321 its reverse (1234140441), we get a palindrome (2674554762).

The spelling of 1440414321 in words is "one billion, four hundred forty million, four hundred fourteen thousand, three hundred twenty-one".