11243639 has 8 divisors (see below), whose sum is σ = 12301200. Its totient is φ = 10192000.

The previous prime is 11243633. The next prime is 11243641. The reversal of 11243639 is 93634211.

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

It is a cyclic number.

It is not a de Polignac number, because 11243639 - 2¹⁶ = 11178103 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 (11243633) 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 7 ways as a sum of consecutive naturals, for example, 3137 + ... + 5685.

It is an arithmetic number, because the mean of its divisors is an integer number (1537650).

Almost surely, 2^11243639 is an apocalyptic number.

11243639 is a deficient number, since it is larger than the sum of its proper divisors (1057561).

11243639 is a wasteful number, since it uses less digits than its factorization.

11243639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2961.

The product of its digits is 3888, while the sum is 29.

The square root of 11243639 is about 3353.1535902789. The cubic root of 11243639 is about 224.0279979353.

The spelling of 11243639 in words is "eleven million, two hundred forty-three thousand, six hundred thirty-nine".