743816729 has 2 divisors, whose sum is σ = 743816730. Its totient is φ = 743816728.

The previous prime is 743816719. The next prime is 743816741. The reversal of 743816729 is 927618347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 473280025 + 270536704 = 21755^2 + 16448^2 .

It is a cyclic number.

It is not a de Polignac number, because 743816729 - 2¹² = 743812633 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (743816719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 371908364 + 371908365.

It is an arithmetic number, because the mean of its divisors is an integer number (371908365).

Almost surely, 2^743816729 is an apocalyptic number.

It is an amenable number.

743816729 is a deficient number, since it is larger than the sum of its proper divisors (1).

743816729 is an equidigital number, since it uses as much as digits as its factorization.

743816729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 508032, while the sum is 47.

The square root of 743816729 is about 27273.0036666298. The cubic root of 743816729 is about 906.0565700910.

The spelling of 743816729 in words is "seven hundred forty-three million, eight hundred sixteen thousand, seven hundred twenty-nine".