12378937 has 8 divisors (see below), whose sum is σ = 13154400. Its totient is φ = 11615904.

The previous prime is 12378917. The next prime is 12378997. The reversal of 12378937 is 73987321.

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

It is a cyclic number.

It is not a de Polignac number, because 12378937 - 2⁷ = 12378809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12378937.

It is not an unprimeable number, because it can be changed into a prime (12378917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012 + ... + 5077.

It is an arithmetic number, because the mean of its divisors is an integer number (1644300).

Almost surely, 2^12378937 is an apocalyptic number.

It is an amenable number.

12378937 is a deficient number, since it is larger than the sum of its proper divisors (775463).

12378937 is a wasteful number, since it uses less digits than its factorization.

12378937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6215.

The product of its digits is 63504, while the sum is 40.

The square root of 12378937 is about 3518.3713561817. The cubic root of 12378937 is about 231.3277769061.

The spelling of 12378937 in words is "twelve million, three hundred seventy-eight thousand, nine hundred thirty-seven".