12390454 has 8 divisors (see below), whose sum is σ = 18615168. Its totient is φ = 6185400.

The previous prime is 12390437. The next prime is 12390457. The reversal of 12390454 is 45409321.

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

It is a super-2 number, since 2×12390454² = 307046700652232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12390457) 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 3 ways as a sum of consecutive naturals, for example, 3222 + ... + 5929.

It is an arithmetic number, because the mean of its divisors is an integer number (2326896).

Almost surely, 2^12390454 is an apocalyptic number.

12390454 is a deficient number, since it is larger than the sum of its proper divisors (6224714).

12390454 is an equidigital number, since it uses as much as digits as its factorization.

12390454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 12390454 is about 3520.0076704462. The cubic root of 12390454 is about 231.3994948627.

Adding to 12390454 its reverse (45409321), we get a palindrome (57799775).

The spelling of 12390454 in words is "twelve million, three hundred ninety thousand, four hundred fifty-four".