9090909029 has 2 divisors, whose sum is σ = 9090909030. Its totient is φ = 9090909028.

The previous prime is 9090909013. The next prime is 9090909031. The reversal of 9090909029 is 9209090909.

It is a happy number.

9090909029 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9025380004 + 65529025 = 95002^2 + 8095^2 .

It is a cyclic number.

It is not a de Polignac number, because 9090909029 - 2⁴ = 9090909013 is a prime.

It is a Sophie Germain prime.

Together with 9090909031, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9090009029) 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, 4545454514 + 4545454515.

It is an arithmetic number, because the mean of its divisors is an integer number (4545454515).

Almost surely, 2^9090909029 is an apocalyptic number.

It is an amenable number.

9090909029 is a deficient number, since it is larger than the sum of its proper divisors (1).

9090909029 is an equidigital number, since it uses as much as digits as its factorization.

9090909029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 118098, while the sum is 47.

The square root of 9090909029 is about 95346.2585999052. The cubic root of 9090909029 is about 2087.0640176856.

The spelling of 9090909029 in words is "nine billion, ninety million, nine hundred nine thousand, twenty-nine".