29985923 has 8 divisors (see below), whose sum is σ = 32813040. Its totient is φ = 27175680.

The previous prime is 29985919. The next prime is 29985931. The reversal of 29985923 is 32958992.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 29985923 - 2² = 29985919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29985973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338 + ... + 7751.

It is an arithmetic number, because the mean of its divisors is an integer number (4101630).

Almost surely, 2^29985923 is an apocalyptic number.

29985923 is a deficient number, since it is larger than the sum of its proper divisors (2827117).

29985923 is a wasteful number, since it uses less digits than its factorization.

29985923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8437.

The product of its digits is 349920, while the sum is 47.

The square root of 29985923 is about 5475.9403758624. The cubic root of 29985923 is about 310.6746424229.

The spelling of 29985923 in words is "twenty-nine million, nine hundred eighty-five thousand, nine hundred twenty-three".