1440013433 has 2 divisors, whose sum is σ = 1440013434. Its totient is φ = 1440013432.

The previous prime is 1440013423. The next prime is 1440013483. The reversal of 1440013433 is 3343100441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 855679504 + 584333929 = 29252^2 + 24173^2 .

It is a cyclic number.

It is not a de Polignac number, because 1440013433 - 2²² = 1435819129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440013399 and 1440013408.

It is not a weakly prime, because it can be changed into another prime (1440013423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720006716 + 720006717.

It is an arithmetic number, because the mean of its divisors is an integer number (720006717).

Almost surely, 2^1440013433 is an apocalyptic number.

It is an amenable number.

1440013433 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440013433 is an equidigital number, since it uses as much as digits as its factorization.

1440013433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1440013433 is about 37947.5089169237. The cubic root of 1440013433 is about 1129.2467460177.

Adding to 1440013433 its reverse (3343100441), we get a palindrome (4783113874).

The spelling of 1440013433 in words is "one billion, four hundred forty million, thirteen thousand, four hundred thirty-three".