12459959 has 4 divisors (see below), whose sum is σ = 12617760. Its totient is φ = 12302160.

The previous prime is 12459949. The next prime is 12459961. The reversal of 12459959 is 95995421.

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

It is a cyclic number.

It is not a de Polignac number, because 12459959 - 2⁴ = 12459943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12459919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78782 + ... + 78939.

It is an arithmetic number, because the mean of its divisors is an integer number (3154440).

Almost surely, 2^12459959 is an apocalyptic number.

12459959 is a deficient number, since it is larger than the sum of its proper divisors (157801).

12459959 is an equidigital number, since it uses as much as digits as its factorization.

12459959 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157800.

The product of its digits is 145800, while the sum is 44.

The square root of 12459959 is about 3529.8667113646. The cubic root of 12459959 is about 231.8313714677.

The spelling of 12459959 in words is "twelve million, four hundred fifty-nine thousand, nine hundred fifty-nine".