11891349 has 12 divisors (see below), whose sum is σ = 17576416. Its totient is φ = 7742952.

The previous prime is 11891323. The next prime is 11891357. The reversal of 11891349 is 94319811.

It is not a de Polignac number, because 11891349 - 2¹¹ = 11889301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11891389) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 14977 + ... + 15750.

Almost surely, 2^11891349 is an apocalyptic number.

It is an amenable number.

11891349 is a deficient number, since it is larger than the sum of its proper divisors (5685067).

11891349 is a wasteful number, since it uses less digits than its factorization.

11891349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30776 (or 30773 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 11891349 is about 3448.3835343535. The cubic root of 11891349 is about 228.2497839609.

The spelling of 11891349 in words is "eleven million, eight hundred ninety-one thousand, three hundred forty-nine".