11239813 has 8 divisors (see below), whose sum is σ = 12386528. Its totient is φ = 10133424.

The previous prime is 11239807. The next prime is 11239841. The reversal of 11239813 is 31893211.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11239813 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 (11239843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9495 + ... + 10612.

It is an arithmetic number, because the mean of its divisors is an integer number (1548316).

Almost surely, 2^11239813 is an apocalyptic number.

11239813 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11239813 is a deficient number, since it is larger than the sum of its proper divisors (1146715).

11239813 is a wasteful number, since it uses less digits than its factorization.

11239813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20163.

The product of its digits is 1296, while the sum is 28.

The square root of 11239813 is about 3352.5830340202. The cubic root of 11239813 is about 224.0025842070.

The spelling of 11239813 in words is "eleven million, two hundred thirty-nine thousand, eight hundred thirteen".