29144942009 has 2 divisors, whose sum is σ = 29144942010. Its totient is φ = 29144942008.

The previous prime is 29144941979. The next prime is 29144942017. The reversal of 29144942009 is 90024944192.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18831523984 + 10313418025 = 137228^2 + 101555^2 .

It is a cyclic number.

It is not a de Polignac number, because 29144942009 - 2²⁸ = 28876506553 is a prime.

It is not a weakly prime, because it can be changed into another prime (29144948009) 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, 14572471004 + 14572471005.

It is an arithmetic number, because the mean of its divisors is an integer number (14572471005).

Almost surely, 2^29144942009 is an apocalyptic number.

It is an amenable number.

29144942009 is a deficient number, since it is larger than the sum of its proper divisors (1).

29144942009 is an equidigital number, since it uses as much as digits as its factorization.

29144942009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 29144942009 in words is "twenty-nine billion, one hundred forty-four million, nine hundred forty-two thousand, nine".