11998459 has 4 divisors (see below), whose sum is σ = 13089240. Its totient is φ = 10907680.

The previous prime is 11998439. The next prime is 11998487. The reversal of 11998459 is 95489911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95489911 = 11 ⋅8680901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11998459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11998439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 545374 + ... + 545395.

It is an arithmetic number, because the mean of its divisors is an integer number (3272310).

Almost surely, 2^11998459 is an apocalyptic number.

11998459 is a deficient number, since it is larger than the sum of its proper divisors (1090781).

11998459 is a wasteful number, since it uses less digits than its factorization.

11998459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090780.

The product of its digits is 116640, while the sum is 46.

The square root of 11998459 is about 3463.8791838053. The cubic root of 11998459 is about 228.9330480653.

The spelling of 11998459 in words is "eleven million, nine hundred ninety-eight thousand, four hundred fifty-nine".