11405939 has 8 divisors (see below), whose sum is σ = 11724720. Its totient is φ = 11091456.

The previous prime is 11405899. The next prime is 11405959. The reversal of 11405939 is 93950411.

11405939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11405939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11405959) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4727 + ... + 6719.

It is an arithmetic number, because the mean of its divisors is an integer number (1465590).

Almost surely, 2^11405939 is an apocalyptic number.

11405939 is a deficient number, since it is larger than the sum of its proper divisors (318781).

11405939 is an equidigital number, since it uses as much as digits as its factorization.

11405939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2149.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 11405939 is about 3377.2679787070. The cubic root of 11405939 is about 225.1007877676.

The spelling of 11405939 in words is "eleven million, four hundred five thousand, nine hundred thirty-nine".