11898517 has 2 divisors, whose sum is σ = 11898518. Its totient is φ = 11898516.

The previous prime is 11898479. The next prime is 11898529. The reversal of 11898517 is 71589811.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11895601 + 2916 = 3449^2 + 54^2 .

It is an emirp because it is prime and its reverse (71589811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11898517 - 2¹⁹ = 11374229 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11898517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11898547) 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 as a sum of consecutive naturals, namely, 5949258 + 5949259.

It is an arithmetic number, because the mean of its divisors is an integer number (5949259).

Almost surely, 2^11898517 is an apocalyptic number.

It is an amenable number.

11898517 is a deficient number, since it is larger than the sum of its proper divisors (1).

11898517 is an equidigital number, since it uses as much as digits as its factorization.

11898517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20160, while the sum is 40.

The square root of 11898517 is about 3449.4227053233. The cubic root of 11898517 is about 228.2956370658.

The spelling of 11898517 in words is "eleven million, eight hundred ninety-eight thousand, five hundred seventeen".