11898823 has 4 divisors (see below), whose sum is σ = 12282688. Its totient is φ = 11514960.

The previous prime is 11898791. The next prime is 11898829. The reversal of 11898823 is 32889811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32889811 = 4969 ⋅6619.

It is a cyclic number.

It is not a de Polignac number, because 11898823 - 2⁵ = 11898791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11898829) 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, 191886 + ... + 191947.

It is an arithmetic number, because the mean of its divisors is an integer number (3070672).

Almost surely, 2^11898823 is an apocalyptic number.

11898823 is a deficient number, since it is larger than the sum of its proper divisors (383865).

11898823 is an equidigital number, since it uses as much as digits as its factorization.

11898823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383864.

The product of its digits is 27648, while the sum is 40.

The square root of 11898823 is about 3449.4670602863. The cubic root of 11898823 is about 228.2975941127.

It can be divided in two parts, 11898 and 823, that added together give a palindrome (12721).

The spelling of 11898823 in words is "eleven million, eight hundred ninety-eight thousand, eight hundred twenty-three".