11405139 has 12 divisors (see below), whose sum is σ = 15634584. Its totient is φ = 7395264.

The previous prime is 11405137. The next prime is 11405143. The reversal of 11405139 is 93150411.

11405139 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11405139 - 2¹ = 11405137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11405137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2719 + ... + 5495.

It is an arithmetic number, because the mean of its divisors is an integer number (1302882).

Almost surely, 2^11405139 is an apocalyptic number.

11405139 is a deficient number, since it is larger than the sum of its proper divisors (4229445).

11405139 is an equidigital number, since it uses as much as digits as its factorization.

11405139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2817 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 11405139 is about 3377.1495377019. The cubic root of 11405139 is about 225.0955248708.

The spelling of 11405139 in words is "eleven million, four hundred five thousand, one hundred thirty-nine".