29422009 has 4 divisors (see below), whose sum is σ = 29433204. Its totient is φ = 29410816.

The previous prime is 29421971. The next prime is 29422021. The reversal of 29422009 is 90022492.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 16483600 + 12938409 = 4060^2 + 3597^2 .

It is a cyclic number.

It is not a de Polignac number, because 29422009 - 2⁷ = 29421881 is a prime.

It is a super-2 number, since 2×29422009² = 1731309227192162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29422079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729 + ... + 7705.

It is an arithmetic number, because the mean of its divisors is an integer number (7358301).

Almost surely, 2^29422009 is an apocalyptic number.

It is an amenable number.

29422009 is a deficient number, since it is larger than the sum of its proper divisors (11195).

29422009 is an equidigital number, since it uses as much as digits as its factorization.

29422009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11194.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 29422009 is about 5424.2058404895. The cubic root of 29422009 is about 308.7147935838.

The spelling of 29422009 in words is "twenty-nine million, four hundred twenty-two thousand, nine".