29873139 has 8 divisors (see below), whose sum is σ = 40335360. Its totient is φ = 19663176.

The previous prime is 29873099. The next prime is 29873141. The reversal of 29873139 is 93137892.

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

It is not a de Polignac number, because 29873139 - 2⁹ = 29872627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29873139.

It is not an unprimeable number, because it can be changed into a prime (29873189) 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 7 ways as a sum of consecutive naturals, for example, 62787 + ... + 63260.

It is an arithmetic number, because the mean of its divisors is an integer number (5041920).

Almost surely, 2^29873139 is an apocalyptic number.

29873139 is a deficient number, since it is larger than the sum of its proper divisors (10462221).

29873139 is a wasteful number, since it uses less digits than its factorization.

29873139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126129.

The product of its digits is 81648, while the sum is 42.

The square root of 29873139 is about 5465.6325343001. The cubic root of 29873139 is about 310.2846466351.

It can be divided in two parts, 298 and 73139, that added together give a palindrome (73437).

The spelling of 29873139 in words is "twenty-nine million, eight hundred seventy-three thousand, one hundred thirty-nine".