11999023 has 4 divisors (see below), whose sum is σ = 12018328. Its totient is φ = 11979720.

The previous prime is 11998979. The next prime is 11999027. The reversal of 11999023 is 32099911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11999023 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11999023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11999027) 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, 8688 + ... + 9973.

It is an arithmetic number, because the mean of its divisors is an integer number (3004582).

Almost surely, 2^11999023 is an apocalyptic number.

11999023 is a deficient number, since it is larger than the sum of its proper divisors (19305).

11999023 is an equidigital number, since it uses as much as digits as its factorization.

11999023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19304.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 11999023 is about 3463.9605944641. The cubic root of 11999023 is about 228.9366350875.

The spelling of 11999023 in words is "eleven million, nine hundred ninety-nine thousand, twenty-three".