11905423 has 4 divisors (see below), whose sum is σ = 12605760. Its totient is φ = 11205088.

The previous prime is 11905409. The next prime is 11905427. The reversal of 11905423 is 32450911.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32450911 = 4931 ⋅6581.

It is a cyclic number.

It is not a de Polignac number, because 11905423 - 2⁹ = 11904911 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 (11905427) 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, 350143 + ... + 350176.

It is an arithmetic number, because the mean of its divisors is an integer number (3151440).

Almost surely, 2^11905423 is an apocalyptic number.

11905423 is a deficient number, since it is larger than the sum of its proper divisors (700337).

11905423 is an equidigital number, since it uses as much as digits as its factorization.

11905423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700336.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 11905423 is about 3450.4235971834. The cubic root of 11905423 is about 228.3397967635.

The spelling of 11905423 in words is "eleven million, nine hundred five thousand, four hundred twenty-three".