11439229 has 4 divisors (see below), whose sum is σ = 11480220. Its totient is φ = 11398240.

The previous prime is 11439227. The next prime is 11439251. The reversal of 11439229 is 92293411.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5631129 + 5808100 = 2373^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 11439229 - 2¹ = 11439227 is a prime.

It is a super-2 number, since 2×11439229² = 261711920228882, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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 11439229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11439221) 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, 20074 + ... + 20635.

It is an arithmetic number, because the mean of its divisors is an integer number (2870055).

Almost surely, 2^11439229 is an apocalyptic number.

It is an amenable number.

11439229 is a deficient number, since it is larger than the sum of its proper divisors (40991).

11439229 is an equidigital number, since it uses as much as digits as its factorization.

11439229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40990.

The product of its digits is 3888, while the sum is 31.

The square root of 11439229 is about 3382.1929276728. The cubic root of 11439229 is about 225.3195722274.

The spelling of 11439229 in words is "eleven million, four hundred thirty-nine thousand, two hundred twenty-nine".