12459949 has 2 divisors, whose sum is σ = 12459950. Its totient is φ = 12459948.

The previous prime is 12459947. The next prime is 12459961. The reversal of 12459949 is 94995421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 5673924 = 2605^2 + 2382^2 .

It is a cyclic number.

It is not a de Polignac number, because 12459949 - 2¹ = 12459947 is a prime.

Together with 12459947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12459943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6229974 + 6229975.

It is an arithmetic number, because the mean of its divisors is an integer number (6229975).

Almost surely, 2^12459949 is an apocalyptic number.

It is an amenable number.

12459949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12459949 is an equidigital number, since it uses as much as digits as its factorization.

12459949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 12459949 is about 3529.8652948802. The cubic root of 12459949 is about 231.8313094473.

The spelling of 12459949 in words is "twelve million, four hundred fifty-nine thousand, nine hundred forty-nine".