29744139 has 16 divisors (see below), whose sum is σ = 41888000. Its totient is φ = 18722016.

The previous prime is 29744119. The next prime is 29744153. The reversal of 29744139 is 93144792.

It is not a de Polignac number, because 29744139 - 2⁹ = 29743627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 29744097 and 29744106.

It is not an unprimeable number, because it can be changed into a prime (29744119) 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 15 ways as a sum of consecutive naturals, for example, 20562 + ... + 21960.

It is an arithmetic number, because the mean of its divisors is an integer number (2618000).

Almost surely, 2^29744139 is an apocalyptic number.

29744139 is a deficient number, since it is larger than the sum of its proper divisors (12143861).

29744139 is a wasteful number, since it uses less digits than its factorization.

29744139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1794.

The product of its digits is 54432, while the sum is 39.

The square root of 29744139 is about 5453.8187538641. The cubic root of 29744139 is about 309.8373722090.

The spelling of 29744139 in words is "twenty-nine million, seven hundred forty-four thousand, one hundred thirty-nine".