1740406729 has 2 divisors, whose sum is σ = 1740406730. Its totient is φ = 1740406728.

The previous prime is 1740406709. The next prime is 1740406747. The reversal of 1740406729 is 9276040471.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1644464704 + 95942025 = 40552^2 + 9795^2 .

It is an emirp because it is prime and its reverse (9276040471) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1740406729 - 2⁵ = 1740406697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1740406691 and 1740406700.

It is not a weakly prime, because it can be changed into another prime (1740406709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870203364 + 870203365.

It is an arithmetic number, because the mean of its divisors is an integer number (870203365).

Almost surely, 2^1740406729 is an apocalyptic number.

It is an amenable number.

1740406729 is a deficient number, since it is larger than the sum of its proper divisors (1).

1740406729 is an equidigital number, since it uses as much as digits as its factorization.

1740406729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 1740406729 is about 41718.1822350879. The cubic root of 1740406729 is about 1202.8650819862.

The spelling of 1740406729 in words is "one billion, seven hundred forty million, four hundred six thousand, seven hundred twenty-nine".