11238649 has 4 divisors (see below), whose sum is σ = 11899764. Its totient is φ = 10577536.

The previous prime is 11238629. The next prime is 11238679. The reversal of 11238649 is 94683211.

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 6594624 + 4644025 = 2568^2 + 2155^2 .

It is not a de Polignac number, because 11238649 - 2²³ = 2850041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11238629) 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, 330532 + ... + 330565.

It is an arithmetic number, because the mean of its divisors is an integer number (2974941).

Almost surely, 2^11238649 is an apocalyptic number.

It is an amenable number.

11238649 is a deficient number, since it is larger than the sum of its proper divisors (661115).

11238649 is an equidigital number, since it uses as much as digits as its factorization.

11238649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661114.

The product of its digits is 10368, while the sum is 34.

The square root of 11238649 is about 3352.4094320354. The cubic root of 11238649 is about 223.9948513379.

The spelling of 11238649 in words is "eleven million, two hundred thirty-eight thousand, six hundred forty-nine".