11287949 has 4 divisors (see below), whose sum is σ = 11951964. Its totient is φ = 10623936.

The previous prime is 11287933. The next prime is 11287951. The reversal of 11287949 is 94978211.

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 7327849 + 3960100 = 2707^2 + 1990^2 .

It is a cyclic number.

It is not a de Polignac number, because 11287949 - 2⁴ = 11287933 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 (11287249) 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 3 ways as a sum of consecutive naturals, for example, 331982 + ... + 332015.

It is an arithmetic number, because the mean of its divisors is an integer number (2987991).

Almost surely, 2^11287949 is an apocalyptic number.

It is an amenable number.

11287949 is a deficient number, since it is larger than the sum of its proper divisors (664015).

11287949 is an equidigital number, since it uses as much as digits as its factorization.

11287949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664014.

The product of its digits is 36288, while the sum is 41.

The square root of 11287949 is about 3359.7543064933. The cubic root of 11287949 is about 224.3219024580.

The spelling of 11287949 in words is "eleven million, two hundred eighty-seven thousand, nine hundred forty-nine".