29009923 has 4 divisors (see below), whose sum is σ = 30271248. Its totient is φ = 27748600.

The previous prime is 29009909. The next prime is 29009963. The reversal of 29009923 is 32990092.

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

It is a cyclic number.

It is not a de Polignac number, because 29009923 - 2⁵ = 29009891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (29009963) 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 3 ways as a sum of consecutive naturals, for example, 630628 + ... + 630673.

It is an arithmetic number, because the mean of its divisors is an integer number (7567812).

Almost surely, 2^29009923 is an apocalyptic number.

29009923 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

29009923 is a deficient number, since it is larger than the sum of its proper divisors (1261325).

29009923 is a wasteful number, since it uses less digits than its factorization.

29009923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261324.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 29009923 is about 5386.0860557551. The cubic root of 29009923 is about 307.2667206413.

The spelling of 29009923 in words is "twenty-nine million, nine thousand, nine hundred twenty-three".