22729829 has 2 divisors, whose sum is σ = 22729830. Its totient is φ = 22729828.

The previous prime is 22729813. The next prime is 22729859. The reversal of 22729829 is 92892722.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17430625 + 5299204 = 4175^2 + 2302^2 .

It is a cyclic number.

It is not a de Polignac number, because 22729829 - 2⁴ = 22729813 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22729859) 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 as a sum of consecutive naturals, namely, 11364914 + 11364915.

It is an arithmetic number, because the mean of its divisors is an integer number (11364915).

Almost surely, 2^22729829 is an apocalyptic number.

It is an amenable number.

22729829 is a deficient number, since it is larger than the sum of its proper divisors (1).

22729829 is an equidigital number, since it uses as much as digits as its factorization.

22729829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 22729829 is about 4767.5810428350. The cubic root of 22729829 is about 283.2687869884.

The spelling of 22729829 in words is "twenty-two million, seven hundred twenty-nine thousand, eight hundred twenty-nine".