12909419 has 4 divisors (see below), whose sum is σ = 12916944. Its totient is φ = 12901896.

The previous prime is 12909397. The next prime is 12909427. The reversal of 12909419 is 91490921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 91490921 = 3967 ⋅23063.

It is a cyclic number.

It is not a de Polignac number, because 12909419 - 2⁸ = 12909163 is a prime.

It is a super-2 number, since 2×12909419² = 333306197835122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12909319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209 + ... + 5085.

It is an arithmetic number, because the mean of its divisors is an integer number (3229236).

Almost surely, 2^12909419 is an apocalyptic number.

12909419 is a deficient number, since it is larger than the sum of its proper divisors (7525).

12909419 is an equidigital number, since it uses as much as digits as its factorization.

12909419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7524.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 12909419 is about 3592.9679931778. The cubic root of 12909419 is about 234.5860768468.

The spelling of 12909419 in words is "twelve million, nine hundred nine thousand, four hundred nineteen".