11391906 has 16 divisors (see below), whose sum is σ = 23983200. Its totient is φ = 3597408.

The previous prime is 11391899. The next prime is 11391931. The reversal of 11391906 is 60919311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49851 + ... + 50078.

It is an arithmetic number, because the mean of its divisors is an integer number (1498950).

Almost surely, 2^11391906 is an apocalyptic number.

11391906 is an abundant number, since it is smaller than the sum of its proper divisors (12591294).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11391906 is a wasteful number, since it uses less digits than its factorization.

11391906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99953.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 11391906 is about 3375.1897724424. The cubic root of 11391906 is about 225.0084342517.

The spelling of 11391906 in words is "eleven million, three hundred ninety-one thousand, nine hundred six".