12099623 has 4 divisors (see below), whose sum is σ = 12132960. Its totient is φ = 12066288.

The previous prime is 12099611. The next prime is 12099643. The reversal of 12099623 is 32699021.

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

It is a cyclic number.

It is not a de Polignac number, because 12099623 - 2⁶ = 12099559 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 12099623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099643) 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, 16118 + ... + 16851.

It is an arithmetic number, because the mean of its divisors is an integer number (3033240).

Almost surely, 2^12099623 is an apocalyptic number.

12099623 is a deficient number, since it is larger than the sum of its proper divisors (33337).

12099623 is an equidigital number, since it uses as much as digits as its factorization.

12099623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33336.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 12099623 is about 3478.4512358232. The cubic root of 12099623 is about 229.5746581293.

The spelling of 12099623 in words is "twelve million, ninety-nine thousand, six hundred twenty-three".