1440497953 has 2 divisors, whose sum is σ = 1440497954. Its totient is φ = 1440497952.

The previous prime is 1440497909. The next prime is 1440498001. The reversal of 1440497953 is 3597940441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 837697249 + 602800704 = 28943^2 + 24552^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440497953 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440497753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720248976 + 720248977.

It is an arithmetic number, because the mean of its divisors is an integer number (720248977).

Almost surely, 2^1440497953 is an apocalyptic number.

It is an amenable number.

1440497953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440497953 is an equidigital number, since it uses as much as digits as its factorization.

1440497953 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 1440497953 is about 37953.8924617752. The cubic root of 1440497953 is about 1129.3733840214.

The spelling of 1440497953 in words is "one billion, four hundred forty million, four hundred ninety-seven thousand, nine hundred fifty-three".