11939311 has 4 divisors (see below), whose sum is σ = 12057624. Its totient is φ = 11821000.

The previous prime is 11939297. The next prime is 11939339. The reversal of 11939311 is 11393911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11939311 - 2⁷ = 11939183 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11939311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11939341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59005 + ... + 59206.

It is an arithmetic number, because the mean of its divisors is an integer number (3014406).

Almost surely, 2^11939311 is an apocalyptic number.

11939311 is a deficient number, since it is larger than the sum of its proper divisors (118313).

11939311 is a wasteful number, since it uses less digits than its factorization.

11939311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118312.

The product of its digits is 729, while the sum is 28.

The square root of 11939311 is about 3455.3308090543. The cubic root of 11939311 is about 228.5562429085.

The spelling of 11939311 in words is "eleven million, nine hundred thirty-nine thousand, three hundred eleven".