1440220499 has 2 divisors, whose sum is σ = 1440220500. Its totient is φ = 1440220498.

The previous prime is 1440220493. The next prime is 1440220531. The reversal of 1440220499 is 9940220441.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1440220499 - 2¹² = 1440216403 is a prime.

It is not a weakly prime, because it can be changed into another prime (1440220493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720110249 + 720110250.

It is an arithmetic number, because the mean of its divisors is an integer number (720110250).

Almost surely, 2^1440220499 is an apocalyptic number.

1440220499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440220499 is an equidigital number, since it uses as much as digits as its factorization.

1440220499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1440220499 is about 37950.2371402341. The cubic root of 1440220499 is about 1129.3008699109.

The spelling of 1440220499 in words is "one billion, four hundred forty million, two hundred twenty thousand, four hundred ninety-nine".