12390937 has 4 divisors (see below), whose sum is σ = 13344100. Its totient is φ = 11437776.

The previous prime is 12390929. The next prime is 12390949. The reversal of 12390937 is 73909321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73909321 = 331 ⋅223291.

It can be written as a sum of positive squares in 2 ways, for example, as 2972176 + 9418761 = 1724^2 + 3069^2 .

It is a cyclic number.

It is not a de Polignac number, because 12390937 - 2³ = 12390929 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12390437) 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, 476562 + ... + 476587.

It is an arithmetic number, because the mean of its divisors is an integer number (3336025).

Almost surely, 2^12390937 is an apocalyptic number.

It is an amenable number.

12390937 is a deficient number, since it is larger than the sum of its proper divisors (953163).

12390937 is an equidigital number, since it uses as much as digits as its factorization.

12390937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953162.

The product of its (nonzero) digits is 10206, while the sum is 34.

The square root of 12390937 is about 3520.0762775826. The cubic root of 12390937 is about 231.4025015996.

The spelling of 12390937 in words is "twelve million, three hundred ninety thousand, nine hundred thirty-seven".