11847649 has 4 divisors (see below), whose sum is σ = 12924720. Its totient is φ = 10770580.

The previous prime is 11847643. The next prime is 11847653. The reversal of 11847649 is 94674811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11847649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11847643) 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, 538519 + ... + 538540.

It is an arithmetic number, because the mean of its divisors is an integer number (3231180).

Almost surely, 2^11847649 is an apocalyptic number.

It is an amenable number.

11847649 is a deficient number, since it is larger than the sum of its proper divisors (1077071).

11847649 is a wasteful number, since it uses less digits than its factorization.

11847649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077070.

The product of its digits is 48384, while the sum is 40.

The square root of 11847649 is about 3442.0414000997. The cubic root of 11847649 is about 227.9698392955.

The spelling of 11847649 in words is "eleven million, eight hundred forty-seven thousand, six hundred forty-nine".