1489729 has 2 divisors, whose sum is σ = 1489730. Its totient is φ = 1489728.

The previous prime is 1489723. The next prime is 1489751. The reversal of 1489729 is 9279841.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1440000 + 49729 = 1200^2 + 223^2 .

It is a cyclic number.

It is not a de Polignac number, because 1489729 - 2³ = 1489721 is a prime.

1489729 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1489691 and 1489700.

It is not a weakly prime, because it can be changed into another prime (1489721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 744864 + 744865.

It is an arithmetic number, because the mean of its divisors is an integer number (744865).

2^1489729 is an apocalyptic number.

It is an amenable number.

1489729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1489729 is an equidigital number, since it uses as much as digits as its factorization.

1489729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 40.

The square root of 1489729 is about 1220.5445506003. The cubic root of 1489729 is about 114.2095509651.

The spelling of 1489729 in words is "one million, four hundred eighty-nine thousand, seven hundred twenty-nine".