12409969 has 8 divisors (see below), whose sum is σ = 14579712. Its totient is φ = 10413840.

The previous prime is 12409939. The next prime is 12409979. The reversal of 12409969 is 96990421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12409969 - 2⁷ = 12409841 is a prime.

It is a super-2 number, since 2×12409969² = 308014661161922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12409909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43249 + ... + 43534.

It is an arithmetic number, because the mean of its divisors is an integer number (1822464).

Almost surely, 2^12409969 is an apocalyptic number.

It is an amenable number.

12409969 is a deficient number, since it is larger than the sum of its proper divisors (2169743).

12409969 is a wasteful number, since it uses less digits than its factorization.

12409969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86807.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 12409969 is about 3522.7785908286. The cubic root of 12409969 is about 231.5209160912.

It can be divided in two parts, 1240996 and 9, that multiplied together give a square (11168964 = 3342²).

The spelling of 12409969 in words is "twelve million, four hundred nine thousand, nine hundred sixty-nine".