1440416 has 12 divisors (see below), whose sum is σ = 2835882. Its totient is φ = 720192.

The previous prime is 1440403. The next prime is 1440419. The reversal of 1440416 is 6140441.

1440416 = T₁₂₃ + T₁₂₄ + ... + T₂₁₈.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1430416 + 10000 = 1196^2 + 100^2 .

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (1440419) by changing a digit.

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 as a sum of consecutive naturals, namely, 22475 + ... + 22538.

2^1440416 is an apocalyptic number.

1440416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1440416 is a deficient number, since it is larger than the sum of its proper divisors (1395466).

1440416 is an equidigital number, since it uses as much as digits as its factorization.

1440416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45023 (or 45015 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1440416 is about 1200.1733208166. The cubic root of 1440416 is about 112.9351966129.

Adding to 1440416 its reverse (6140441), we get a palindrome (7580857).

The spelling of 1440416 in words is "one million, four hundred forty thousand, four hundred sixteen".