11049947 has 4 divisors (see below), whose sum is σ = 11070696. Its totient is φ = 11029200.

The previous prime is 11049911. The next prime is 11049977. The reversal of 11049947 is 74994011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74994011 = 2309 ⋅32479.

It is a cyclic number.

It is not a de Polignac number, because 11049947 - 2¹⁰ = 11048923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11049977) 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, 9554 + ... + 10647.

It is an arithmetic number, because the mean of its divisors is an integer number (2767674).

Almost surely, 2^11049947 is an apocalyptic number.

11049947 is a deficient number, since it is larger than the sum of its proper divisors (20749).

11049947 is an equidigital number, since it uses as much as digits as its factorization.

11049947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20748.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 11049947 is about 3324.1460557563. The cubic root of 11049947 is about 222.7341103602.

The spelling of 11049947 in words is "eleven million, forty-nine thousand, nine hundred forty-seven".