741809 has 2 divisors, whose sum is σ = 741810. Its totient is φ = 741808.

The previous prime is 741803. The next prime is 741827. The reversal of 741809 is 908147.

741809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 739600 + 2209 = 860^2 + 47^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-741809 is a prime.

It is not a weakly prime, because it can be changed into another prime (741803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370904 + 370905.

It is an arithmetic number, because the mean of its divisors is an integer number (370905).

2⁷⁴¹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

741809 is a deficient number, since it is larger than the sum of its proper divisors (1).

741809 is an equidigital number, since it uses as much as digits as its factorization.

741809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 741809 is about 861.2833447827. The cubic root of 741809 is about 90.5240618538.

The spelling of 741809 in words is "seven hundred forty-one thousand, eight hundred nine".