11998841 has 4 divisors (see below), whose sum is σ = 12323172. Its totient is φ = 11674512.

The previous prime is 11998817. The next prime is 11998843. The reversal of 11998841 is 14889911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14889911 = 43 ⋅346277.

It can be written as a sum of positive squares in 2 ways, for example, as 7311616 + 4687225 = 2704^2 + 2165^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11998841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11998843) 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, 162110 + ... + 162183.

It is an arithmetic number, because the mean of its divisors is an integer number (3080793).

Almost surely, 2^11998841 is an apocalyptic number.

It is an amenable number.

11998841 is a deficient number, since it is larger than the sum of its proper divisors (324331).

11998841 is an equidigital number, since it uses as much as digits as its factorization.

11998841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324330.

The product of its digits is 20736, while the sum is 41.

The square root of 11998841 is about 3463.9343238578. The cubic root of 11998841 is about 228.9354775855.

The spelling of 11998841 in words is "eleven million, nine hundred ninety-eight thousand, eight hundred forty-one".