1440244454 has 16 divisors (see below), whose sum is σ = 2495397456. Its totient is φ = 616147200.

The previous prime is 1440244439. The next prime is 1440244501. The reversal of 1440244454 is 4544420441.

It is a self number, because there is not a number n which added to its sum of digits gives 1440244454.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1925087 + ... + 1925834.

It is an arithmetic number, because the mean of its divisors is an integer number (155962341).

Almost surely, 2^1440244454 is an apocalyptic number.

1440244454 is a deficient number, since it is larger than the sum of its proper divisors (1055153002).

1440244454 is a wasteful number, since it uses less digits than its factorization.

1440244454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3850951.

The product of its (nonzero) digits is 40960, while the sum is 32.

The square root of 1440244454 is about 37950.5527495977. The cubic root of 1440244454 is about 1129.3071310476.

Adding to 1440244454 its reverse (4544420441), we get a palindrome (5984664895).

The spelling of 1440244454 in words is "one billion, four hundred forty million, two hundred forty-four thousand, four hundred fifty-four".