11729879 has 4 divisors (see below), whose sum is σ = 13405584. Its totient is φ = 10054176.

The previous prime is 11729857. The next prime is 11729899. The reversal of 11729879 is 97892711.

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 11729879 - 2¹⁶ = 11664343 is a prime.

It is a super-2 number, since 2×11729879² = 275180122709282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11729899) 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 3 ways as a sum of consecutive naturals, for example, 837842 + ... + 837855.

It is an arithmetic number, because the mean of its divisors is an integer number (3351396).

Almost surely, 2^11729879 is an apocalyptic number.

11729879 is a deficient number, since it is larger than the sum of its proper divisors (1675705).

11729879 is an equidigital number, since it uses as much as digits as its factorization.

11729879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675704.

The product of its digits is 63504, while the sum is 44.

The square root of 11729879 is about 3424.8910931590. The cubic root of 11729879 is about 227.2119544126.

The spelling of 11729879 in words is "eleven million, seven hundred twenty-nine thousand, eight hundred seventy-nine".