12459397 has 4 divisors (see below), whose sum is σ = 12475360. Its totient is φ = 12443436.

The previous prime is 12459347. The next prime is 12459407. The reversal of 12459397 is 79395421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 79395421 = 7 ⋅11342203.

It is a cyclic number.

It is not a de Polignac number, because 12459397 - 2²³ = 4070789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12459347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6747 + ... + 8392.

It is an arithmetic number, because the mean of its divisors is an integer number (3118840).

Almost surely, 2^12459397 is an apocalyptic number.

It is an amenable number.

12459397 is a deficient number, since it is larger than the sum of its proper divisors (15963).

12459397 is an equidigital number, since it uses as much as digits as its factorization.

12459397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15962.

The product of its digits is 68040, while the sum is 40.

The square root of 12459397 is about 3529.7871040617. The cubic root of 12459397 is about 231.8278858706.

The spelling of 12459397 in words is "twelve million, four hundred fifty-nine thousand, three hundred ninety-seven".