12390849 has 12 divisors (see below), whose sum is σ = 18150912. Its totient is φ = 8143800.

The previous prime is 12390839. The next prime is 12390853. The reversal of 12390849 is 94809321.

12390849 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12390849 - 2⁸ = 12390593 is a prime.

It is a super-3 number, since 3×12390849³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12390839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9057 + ... + 10334.

It is an arithmetic number, because the mean of its divisors is an integer number (1512576).

Almost surely, 2^12390849 is an apocalyptic number.

It is an amenable number.

12390849 is a deficient number, since it is larger than the sum of its proper divisors (5760063).

12390849 is a wasteful number, since it uses less digits than its factorization.

12390849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19468 (or 19465 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12390849 is about 3520.0637778313. The cubic root of 12390849 is about 231.4019537941.

The spelling of 12390849 in words is "twelve million, three hundred ninety thousand, eight hundred forty-nine".