1440049943 has 2 divisors, whose sum is σ = 1440049944. Its totient is φ = 1440049942.

The previous prime is 1440049931. The next prime is 1440049969. The reversal of 1440049943 is 3499400441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440049943 - 2¹⁰ = 1440048919 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440049897 and 1440049906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1440042943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720024971 + 720024972.

It is an arithmetic number, because the mean of its divisors is an integer number (720024972).

Almost surely, 2^1440049943 is an apocalyptic number.

1440049943 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440049943 is an equidigital number, since it uses as much as digits as its factorization.

1440049943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 1440049943 is about 37947.9899731198. The cubic root of 1440049943 is about 1129.2562895514.

The spelling of 1440049943 in words is "one billion, four hundred forty million, forty-nine thousand, nine hundred forty-three".