3530729 has 2 divisors, whose sum is σ = 3530730. Its totient is φ = 3530728.

The previous prime is 3530717. The next prime is 3530731. The reversal of 3530729 is 9270353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2647129 + 883600 = 1627^2 + 940^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3530729 is a prime.

Together with 3530731, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3530629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765364 + 1765365.

It is an arithmetic number, because the mean of its divisors is an integer number (1765365).

Almost surely, 2^3530729 is an apocalyptic number.

It is an amenable number.

3530729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3530729 is an equidigital number, since it uses as much as digits as its factorization.

3530729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 29.

The square root of 3530729 is about 1879.0234165651. The cubic root of 3530729 is about 152.2724942340.

The spelling of 3530729 in words is "three million, five hundred thirty thousand, seven hundred twenty-nine".