1440455459 has 2 divisors, whose sum is σ = 1440455460. Its totient is φ = 1440455458.

The previous prime is 1440455449. The next prime is 1440455461. The reversal of 1440455459 is 9545540441.

It is a strong prime.

It is an emirp because it is prime and its reverse (9545540441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440455459 is a prime.

Together with 1440455461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1440455449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720227729 + 720227730.

It is an arithmetic number, because the mean of its divisors is an integer number (720227730).

Almost surely, 2^1440455459 is an apocalyptic number.

1440455459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440455459 is an equidigital number, since it uses as much as digits as its factorization.

1440455459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288000, while the sum is 41.

The square root of 1440455459 is about 37953.3326468177. The cubic root of 1440455459 is about 1129.3622785875.

The spelling of 1440455459 in words is "one billion, four hundred forty million, four hundred fifty-five thousand, four hundred fifty-nine".