1440020414 has 32 divisors (see below), whose sum is σ = 2510355456. Its totient is φ = 606751200.

The previous prime is 1440020389. The next prime is 1440020419. The reversal of 1440020414 is 4140200441.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440020419) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 611339 + ... + 613689.

It is an arithmetic number, because the mean of its divisors is an integer number (78448608).

Almost surely, 2^1440020414 is an apocalyptic number.

1440020414 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1440020414 is a deficient number, since it is larger than the sum of its proper divisors (1070335042).

1440020414 is a wasteful number, since it uses less digits than its factorization.

1440020414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1440020414 is about 37947.6008991346. The cubic root of 1440020414 is about 1129.2485708291.

Adding to 1440020414 its reverse (4140200441), we get a palindrome (5580220855).

The spelling of 1440020414 in words is "one billion, four hundred forty million, twenty thousand, four hundred fourteen".