12408385 has 32 divisors (see below), whose sum is σ = 17978112. Its totient is φ = 8110080.

The previous prime is 12408379. The next prime is 12408397. The reversal of 12408385 is 58380421.

12408385 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12408385 - 2³ = 12408377 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21217 + ... + 21793.

It is an arithmetic number, because the mean of its divisors is an integer number (561816).

It is a vampire number, since it can be written as 2885 ⋅ 4301 (with its own digits).

Almost surely, 2^12408385 is an apocalyptic number.

It is an amenable number.

12408385 is a deficient number, since it is larger than the sum of its proper divisors (5569727).

12408385 is a wasteful number, since it uses less digits than its factorization.

12408385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 12408385 is about 3522.5537611227. The cubic root of 12408385 is about 231.5110652813.

The spelling of 12408385 in words is "twelve million, four hundred eight thousand, three hundred eighty-five".