12478937 has 4 divisors (see below), whose sum is σ = 12494820. Its totient is φ = 12463056.

The previous prime is 12478933. The next prime is 12478943. The reversal of 12478937 is 73987421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10010896 + 2468041 = 3164^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 12478937 - 2² = 12478933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12478894 and 12478903.

It is not an unprimeable number, because it can be changed into a prime (12478933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6698 + ... + 8355.

It is an arithmetic number, because the mean of its divisors is an integer number (3123705).

Almost surely, 2^12478937 is an apocalyptic number.

It is an amenable number.

12478937 is a deficient number, since it is larger than the sum of its proper divisors (15883).

12478937 is an equidigital number, since it uses as much as digits as its factorization.

12478937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15882.

The product of its digits is 84672, while the sum is 41.

The square root of 12478937 is about 3532.5538920164. The cubic root of 12478937 is about 231.9490140138.

The spelling of 12478937 in words is "twelve million, four hundred seventy-eight thousand, nine hundred thirty-seven".