3433740721 has 2 divisors, whose sum is σ = 3433740722. Its totient is φ = 3433740720.

The previous prime is 3433740707. The next prime is 3433740731. The reversal of 3433740721 is 1270473343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3354726400 + 79014321 = 57920^2 + 8889^2 .

It is an emirp because it is prime and its reverse (1270473343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3433740721 - 2⁷ = 3433740593 is a prime.

It is not a weakly prime, because it can be changed into another prime (3433740701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1716870360 + 1716870361.

It is an arithmetic number, because the mean of its divisors is an integer number (1716870361).

Almost surely, 2^3433740721 is an apocalyptic number.

It is an amenable number.

3433740721 is a deficient number, since it is larger than the sum of its proper divisors (1).

3433740721 is an equidigital number, since it uses as much as digits as its factorization.

3433740721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 42336, while the sum is 34.

The square root of 3433740721 is about 58598.1289889020. The cubic root of 3433740721 is about 1508.6523245955.

The spelling of 3433740721 in words is "three billion, four hundred thirty-three million, seven hundred forty thousand, seven hundred twenty-one".