29423885 has 4 divisors (see below), whose sum is σ = 35308668. Its totient is φ = 23539104.

The previous prime is 29423881. The next prime is 29423887. The reversal of 29423885 is 58832492.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16370116 + 13053769 = 4046^2 + 3613^2 .

It is a cyclic number.

It is not a de Polignac number, because 29423885 - 2² = 29423881 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29423881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2942384 + ... + 2942393.

It is an arithmetic number, because the mean of its divisors is an integer number (8827167).

Almost surely, 2^29423885 is an apocalyptic number.

It is an amenable number.

29423885 is a deficient number, since it is larger than the sum of its proper divisors (5884783).

29423885 is an equidigital number, since it uses as much as digits as its factorization.

29423885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5884782.

The product of its digits is 138240, while the sum is 41.

The square root of 29423885 is about 5424.3787662736. The cubic root of 29423885 is about 308.7213548471.

The spelling of 29423885 in words is "twenty-nine million, four hundred twenty-three thousand, eight hundred eighty-five".