11913933 has 4 divisors (see below), whose sum is σ = 15885248. Its totient is φ = 7942620.

The previous prime is 11913899. The next prime is 11913953. The reversal of 11913933 is 33931911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11913933 - 2⁸ = 11913677 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 11913933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11913953) 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, 1985653 + ... + 1985658.

It is an arithmetic number, because the mean of its divisors is an integer number (3971312).

Almost surely, 2^11913933 is an apocalyptic number.

It is an amenable number.

11913933 is a deficient number, since it is larger than the sum of its proper divisors (3971315).

11913933 is an equidigital number, since it uses as much as digits as its factorization.

11913933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3971314.

The product of its digits is 2187, while the sum is 30.

The square root of 11913933 is about 3451.6565588135. The cubic root of 11913933 is about 228.3941895911.

The spelling of 11913933 in words is "eleven million, nine hundred thirteen thousand, nine hundred thirty-three".