1440779 has 2 divisors, whose sum is σ = 1440780. Its totient is φ = 1440778.

The previous prime is 1440773. The next prime is 1440799. The reversal of 1440779 is 9770441.

It is a weak prime.

It is an emirp because it is prime and its reverse (9770441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1440779 - 2⁴ = 1440763 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1440773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 720389 + 720390.

It is an arithmetic number, because the mean of its divisors is an integer number (720390).

2^1440779 is an apocalyptic number.

1440779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1440779 is an equidigital number, since it uses as much as digits as its factorization.

1440779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 1440779 is about 1200.3245394476. The cubic root of 1440779 is about 112.9446827690.

The spelling of 1440779 in words is "one million, four hundred forty thousand, seven hundred seventy-nine".