29918047 has 4 divisors (see below), whose sum is σ = 29931480. Its totient is φ = 29904616.

The previous prime is 29918039. The next prime is 29918059. The reversal of 29918047 is 74081992.

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 29918047 - 2³ = 29918039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29918017) 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 in 3 ways as a sum of consecutive naturals, for example, 2488 + ... + 8125.

It is an arithmetic number, because the mean of its divisors is an integer number (7482870).

Almost surely, 2^29918047 is an apocalyptic number.

29918047 is a deficient number, since it is larger than the sum of its proper divisors (13433).

29918047 is a wasteful number, since it uses less digits than its factorization.

29918047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 29918047 is about 5469.7392076771. The cubic root of 29918047 is about 310.4400514211.

The spelling of 29918047 in words is "twenty-nine million, nine hundred eighteen thousand, forty-seven".