11649847 has 4 divisors (see below), whose sum is σ = 12708936. Its totient is φ = 10590760.

The previous prime is 11649829. The next prime is 11649853. The reversal of 11649847 is 74894611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74894611 = 11 ⋅6808601.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11649847 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 (11649817) 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, 529528 + ... + 529549.

It is an arithmetic number, because the mean of its divisors is an integer number (3177234).

Almost surely, 2^11649847 is an apocalyptic number.

11649847 is a deficient number, since it is larger than the sum of its proper divisors (1059089).

11649847 is a wasteful number, since it uses less digits than its factorization.

11649847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1059088.

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

The square root of 11649847 is about 3413.1872201800. The cubic root of 11649847 is about 226.6940251964.

It can be divided in two parts, 1164 and 9847, that added together give a palindrome (11011).

The spelling of 11649847 in words is "eleven million, six hundred forty-nine thousand, eight hundred forty-seven".