12490939 has 2 divisors, whose sum is σ = 12490940. Its totient is φ = 12490938.

The previous prime is 12490931. The next prime is 12490943. The reversal of 12490939 is 93909421.

It is a strong prime.

It is an emirp because it is prime and its reverse (93909421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12490939 - 2³ = 12490931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12490898 and 12490907.

It is not a weakly prime, because it can be changed into another prime (12490931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6245469 + 6245470.

It is an arithmetic number, because the mean of its divisors is an integer number (6245470).

Almost surely, 2^12490939 is an apocalyptic number.

12490939 is a deficient number, since it is larger than the sum of its proper divisors (1).

12490939 is an equidigital number, since it uses as much as digits as its factorization.

12490939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 12490939 is about 3534.2522547209. The cubic root of 12490939 is about 232.0233515437.

The spelling of 12490939 in words is "twelve million, four hundred ninety thousand, nine hundred thirty-nine".