3445729 has 6 divisors (see below), whose sum is σ = 4008354. Its totient is φ = 2953440.

The previous prime is 3445723. The next prime is 3445753. The reversal of 3445729 is 9275443.

3445729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3415104 + 30625 = 1848^2 + 175^2 .

It is not a de Polignac number, because 3445729 - 2⁷ = 3445601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3445694 and 3445703.

It is not an unprimeable number, because it can be changed into a prime (3445723) 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 in 5 ways as a sum of consecutive naturals, for example, 35112 + ... + 35209.

It is an arithmetic number, because the mean of its divisors is an integer number (668059).

Almost surely, 2^3445729 is an apocalyptic number.

It is an amenable number.

3445729 is a deficient number, since it is larger than the sum of its proper divisors (562625).

3445729 is an equidigital number, since it uses as much as digits as its factorization.

3445729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70335 (or 70328 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 3445729 is about 1856.2674915001. The cubic root of 3445729 is about 151.0406013359.

The spelling of 3445729 in words is "three million, four hundred forty-five thousand, seven hundred twenty-nine".