1440402441 has 8 divisors (see below), whose sum is σ = 1921105344. Its totient is φ = 959983920.

The previous prime is 1440402413. The next prime is 1440402451. The reversal of 1440402441 is 1442040441.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1440402441 - 2²¹ = 1438305289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1440402451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58981 + ... + 79746.

It is an arithmetic number, because the mean of its divisors is an integer number (240138168).

Almost surely, 2^1440402441 is an apocalyptic number.

It is an amenable number.

1440402441 is a deficient number, since it is larger than the sum of its proper divisors (480702903).

1440402441 is a wasteful number, since it uses less digits than its factorization.

1440402441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142191.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 1440402441 is about 37952.6341773532. The cubic root of 1440402441 is about 1129.3484224923.

Adding to 1440402441 its reverse (1442040441), we get a palindrome (2882442882).

The spelling of 1440402441 in words is "one billion, four hundred forty million, four hundred two thousand, four hundred forty-one".