11959823 has 8 divisors (see below), whose sum is σ = 12972960. Its totient is φ = 10981120.

The previous prime is 11959777. The next prime is 11959841. The reversal of 11959823 is 32895911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11959823 - 2¹⁶ = 11894287 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 (11959853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7883 + ... + 9276.

It is an arithmetic number, because the mean of its divisors is an integer number (1621620).

Almost surely, 2^11959823 is an apocalyptic number.

11959823 is a deficient number, since it is larger than the sum of its proper divisors (1013137).

11959823 is a wasteful number, since it uses less digits than its factorization.

11959823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217.

The product of its digits is 19440, while the sum is 38.

The square root of 11959823 is about 3458.2977026277. The cubic root of 11959823 is about 228.6870562482.

The spelling of 11959823 in words is "eleven million, nine hundred fifty-nine thousand, eight hundred twenty-three".