12379729 has 4 divisors (see below), whose sum is σ = 12392560. Its totient is φ = 12366900.

The previous prime is 12379693. The next prime is 12379739. The reversal of 12379729 is 92797321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 92797321 = 4241 ⋅21881.

It is a cyclic number.

It is not a de Polignac number, because 12379729 - 2²¹ = 10282577 is a prime.

It is a super-2 number, since 2×12379729² = 306515380226882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12379691 and 12379700.

It is not an unprimeable number, because it can be changed into a prime (12379739) 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, 4839 + ... + 6940.

It is an arithmetic number, because the mean of its divisors is an integer number (3098140).

Almost surely, 2^12379729 is an apocalyptic number.

It is an amenable number.

12379729 is a deficient number, since it is larger than the sum of its proper divisors (12831).

12379729 is a wasteful number, since it uses less digits than its factorization.

12379729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12830.

The product of its digits is 47628, while the sum is 40.

The square root of 12379729 is about 3518.4839064574. The cubic root of 12379729 is about 231.3327102239.

The spelling of 12379729 in words is "twelve million, three hundred seventy-nine thousand, seven hundred twenty-nine".