3243200729 has 2 divisors, whose sum is σ = 3243200730. Its totient is φ = 3243200728.

The previous prime is 3243200699. The next prime is 3243200747. The reversal of 3243200729 is 9270023423.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3243074704 + 126025 = 56948^2 + 355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243200729 is a prime.

It is a super-2 number, since 2×3243200729² = 21036701937172262882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3243200695 and 3243200704.

It is not a weakly prime, because it can be changed into another prime (3243200759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1621600364 + 1621600365.

It is an arithmetic number, because the mean of its divisors is an integer number (1621600365).

Almost surely, 2^3243200729 is an apocalyptic number.

It is an amenable number.

3243200729 is a deficient number, since it is larger than the sum of its proper divisors (1).

3243200729 is an equidigital number, since it uses as much as digits as its factorization.

3243200729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 3243200729 is about 56949.1064811381. The cubic root of 3243200729 is about 1480.2143482155.

The spelling of 3243200729 in words is "three billion, two hundred forty-three million, two hundred thousand, seven hundred twenty-nine".