11729939 has 4 divisors (see below), whose sum is σ = 12632256. Its totient is φ = 10827624.

The previous prime is 11729923. The next prime is 11729947. The reversal of 11729939 is 93992711.

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 11729939 - 2⁴ = 11729923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11729896 and 11729905.

It is not an unprimeable number, because it can be changed into a prime (11729909) 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, 451139 + ... + 451164.

It is an arithmetic number, because the mean of its divisors is an integer number (3158064).

Almost surely, 2^11729939 is an apocalyptic number.

11729939 is a deficient number, since it is larger than the sum of its proper divisors (902317).

11729939 is an equidigital number, since it uses as much as digits as its factorization.

11729939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902316.

The product of its digits is 30618, while the sum is 41.

The square root of 11729939 is about 3424.8998525504. The cubic root of 11729939 is about 227.2123418191.

It can be divided in two parts, 1172 and 9939, that added together give a palindrome (11111).

The spelling of 11729939 in words is "eleven million, seven hundred twenty-nine thousand, nine hundred thirty-nine".