11006391 has 16 divisors (see below), whose sum is σ = 16283520. Its totient is φ = 6556320.

The previous prime is 11006389. The next prime is 11006419. The reversal of 11006391 is 19360011.

It is a happy number.

11006391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11006391 - 2¹ = 11006389 is a prime.

It is a super-2 number, since 2×11006391² = 242281285689762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11006321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 880 + ... + 4773.

It is an arithmetic number, because the mean of its divisors is an integer number (1017720).

Almost surely, 2^11006391 is an apocalyptic number.

11006391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11006391 is a deficient number, since it is larger than the sum of its proper divisors (5277129).

11006391 is a wasteful number, since it uses less digits than its factorization.

11006391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5726.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 11006391 is about 3317.5881299522. The cubic root of 11006391 is about 222.4410717993.

The spelling of 11006391 in words is "eleven million, six thousand, three hundred ninety-one".