29055809 has 2 divisors, whose sum is σ = 29055810. Its totient is φ = 29055808.

The previous prime is 29055787. The next prime is 29055811. The reversal of 29055809 is 90855092.

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., 25725184 + 3330625 = 5072^2 + 1825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-29055809 is a prime.

Together with 29055811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (29055899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14527904 + 14527905.

It is an arithmetic number, because the mean of its divisors is an integer number (14527905).

Almost surely, 2^29055809 is an apocalyptic number.

It is an amenable number.

29055809 is a deficient number, since it is larger than the sum of its proper divisors (1).

29055809 is an equidigital number, since it uses as much as digits as its factorization.

29055809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 29055809 is about 5390.3440520991. The cubic root of 29055809 is about 307.4286401050.

It can be divided in two parts, 2905 and 5809, that multiplied together give a triangular number (16875145 = T₅₈₀₉).

The spelling of 29055809 in words is "twenty-nine million, fifty-five thousand, eight hundred nine".