12389408 has 12 divisors (see below), whose sum is σ = 24391710. Its totient is φ = 6194688.

The previous prime is 12389407. The next prime is 12389437. The reversal of 12389408 is 80498321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10163344 + 2226064 = 3188^2 + 1492^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12389401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193553 + ... + 193616.

Almost surely, 2^12389408 is an apocalyptic number.

It is an amenable number.

12389408 is a deficient number, since it is larger than the sum of its proper divisors (12002302).

12389408 is an equidigital number, since it uses as much as digits as its factorization.

12389408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387179 (or 387171 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 12389408 is about 3519.8590880886. The cubic root of 12389408 is about 231.3929831110.

The spelling of 12389408 in words is "twelve million, three hundred eighty-nine thousand, four hundred eight".