11391406 has 8 divisors (see below), whose sum is σ = 18401544. Its totient is φ = 5257560.

The previous prime is 11391383. The next prime is 11391421. The reversal of 11391406 is 60419311.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219040 + ... + 219091.

It is an arithmetic number, because the mean of its divisors is an integer number (2300193).

Almost surely, 2^11391406 is an apocalyptic number.

11391406 is a deficient number, since it is larger than the sum of its proper divisors (7010138).

11391406 is a wasteful number, since it uses less digits than its factorization.

11391406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438146.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 11391406 is about 3375.1157017205. The cubic root of 11391406 is about 225.0051422693.

It can be divided in two parts, 113 and 91406, that added together give a palindrome (91519).

The spelling of 11391406 in words is "eleven million, three hundred ninety-one thousand, four hundred six".