12398017 has 4 divisors (see below), whose sum is σ = 12428740. Its totient is φ = 12367296.

The previous prime is 12398011. The next prime is 12398033. The reversal of 12398017 is 71089321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11282881 + 1115136 = 3359^2 + 1056^2 .

It is a cyclic number.

It is not a de Polignac number, because 12398017 - 2²³ = 4009409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12398017.

It is not an unprimeable number, because it can be changed into a prime (12398011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14748 + ... + 15565.

It is an arithmetic number, because the mean of its divisors is an integer number (3107185).

Almost surely, 2^12398017 is an apocalyptic number.

It is an amenable number.

12398017 is a deficient number, since it is larger than the sum of its proper divisors (30723).

12398017 is an equidigital number, since it uses as much as digits as its factorization.

12398017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30722.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12398017 is about 3521.0817939946. The cubic root of 12398017 is about 231.4465665419.

The spelling of 12398017 in words is "twelve million, three hundred ninety-eight thousand, seventeen".