12459997 has 16 divisors (see below), whose sum is σ = 15023232. Its totient is φ = 10193920.

The previous prime is 12459973. The next prime is 12460001. The reversal of 12459997 is 79995421.

It is a happy number.

It is not a de Polignac number, because 12459997 - 2⁷ = 12459869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12459907) 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 15 ways as a sum of consecutive naturals, for example, 2853 + ... + 5749.

It is an arithmetic number, because the mean of its divisors is an integer number (938952).

Almost surely, 2^12459997 is an apocalyptic number.

12459997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12459997 is a deficient number, since it is larger than the sum of its proper divisors (2563235).

12459997 is a wasteful number, since it uses less digits than its factorization.

12459997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2948.

The product of its digits is 204120, while the sum is 46.

The square root of 12459997 is about 3529.8720940000. The cubic root of 12459997 is about 231.8316071448.

It can be divided in two parts, 12459 and 997, that added together give a square (13456 = 116²).

The spelling of 12459997 in words is "twelve million, four hundred fifty-nine thousand, nine hundred ninety-seven".