11900423 has 4 divisors (see below), whose sum is σ = 11944608. Its totient is φ = 11856240.

The previous prime is 11900419. The next prime is 11900437. The reversal of 11900423 is 32400911.

11900423 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32400911 = 137 ⋅236503.

It is a cyclic number.

It is not a de Polignac number, because 11900423 - 2² = 11900419 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11900395 and 11900404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11906423) 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, 21686 + ... + 22227.

It is an arithmetic number, because the mean of its divisors is an integer number (2986152).

Almost surely, 2^11900423 is an apocalyptic number.

11900423 is a deficient number, since it is larger than the sum of its proper divisors (44185).

11900423 is an equidigital number, since it uses as much as digits as its factorization.

11900423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44184.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 11900423 is about 3449.6989723743. The cubic root of 11900423 is about 228.3078264911.

The spelling of 11900423 in words is "eleven million, nine hundred thousand, four hundred twenty-three".