12409699349 has 4 divisors (see below), whose sum is σ = 13062841440. Its totient is φ = 11756557260.

The previous prime is 12409699319. The next prime is 12409699361. The reversal of 12409699349 is 94399690421.

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.

It is a cyclic number.

It is not a de Polignac number, because 12409699349 - 2³² = 8114732053 is a prime.

It is a super-3 number, since 3×12409699349³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12409699294 and 12409699303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12409699319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326571017 + ... + 326571054.

It is an arithmetic number, because the mean of its divisors is an integer number (3265710360).

Almost surely, 2^12409699349 is an apocalyptic number.

12409699349 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12409699349 is a deficient number, since it is larger than the sum of its proper divisors (653142091).

12409699349 is an equidigital number, since it uses as much as digits as its factorization.

12409699349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653142090.

The product of its (nonzero) digits is 3779136, while the sum is 56.

The spelling of 12409699349 in words is "twelve billion, four hundred nine million, six hundred ninety-nine thousand, three hundred forty-nine".