1440503947 has 2 divisors, whose sum is σ = 1440503948. Its totient is φ = 1440503946.

The previous prime is 1440503923. The next prime is 1440503989. The reversal of 1440503947 is 7493050441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440503947 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440500947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720251973 + 720251974.

It is an arithmetic number, because the mean of its divisors is an integer number (720251974).

Almost surely, 2^1440503947 is an apocalyptic number.

1440503947 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440503947 is an equidigital number, since it uses as much as digits as its factorization.

1440503947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1440503947 is about 37953.9714259259. The cubic root of 1440503947 is about 1129.3749504831.

The spelling of 1440503947 in words is "one billion, four hundred forty million, five hundred three thousand, nine hundred forty-seven".