3005729 has 4 divisors (see below), whose sum is σ = 3102720. Its totient is φ = 2908740.

The previous prime is 3005711. The next prime is 3005731. The reversal of 3005729 is 9275003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9275003 = 23 ⋅403261.

It is a cyclic number.

It is not a de Polignac number, because 3005729 - 2¹² = 3001633 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3005698 and 3005707.

It is not an unprimeable number, because it can be changed into a prime (3005749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48449 + ... + 48510.

It is an arithmetic number, because the mean of its divisors is an integer number (775680).

Almost surely, 2^3005729 is an apocalyptic number.

It is an amenable number.

3005729 is a deficient number, since it is larger than the sum of its proper divisors (96991).

3005729 is an equidigital number, since it uses as much as digits as its factorization.

3005729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96990.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 3005729 is about 1733.7038386068. The cubic root of 3005729 is about 144.3167058499.

The spelling of 3005729 in words is "three million, five thousand, seven hundred twenty-nine".