29312439 has 16 divisors (see below), whose sum is σ = 42806400. Its totient is φ = 17731296.

The previous prime is 29312401. The next prime is 29312449. The reversal of 29312439 is 93421392.

It is a de Polignac number, because none of the positive numbers 2^k-29312439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29312449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4069 + ... + 8670.

It is an arithmetic number, because the mean of its divisors is an integer number (2675400).

Almost surely, 2^29312439 is an apocalyptic number.

29312439 is a deficient number, since it is larger than the sum of its proper divisors (13493961).

29312439 is a wasteful number, since it uses less digits than its factorization.

29312439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814.

The product of its digits is 11664, while the sum is 33.

The square root of 29312439 is about 5414.0963234874. The cubic root of 29312439 is about 308.3310903822.

The spelling of 29312439 in words is "twenty-nine million, three hundred twelve thousand, four hundred thirty-nine".