11447641 has 4 divisors (see below), whose sum is σ = 11604532. Its totient is φ = 11290752.

The previous prime is 11447627. The next prime is 11447669. The reversal of 11447641 is 14674411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14674411 = 857 ⋅17123.

It can be written as a sum of positive squares in 2 ways, for example, as 10017225 + 1430416 = 3165^2 + 1196^2 .

It is a cyclic number.

It is not a de Polignac number, because 11447641 - 2¹¹ = 11445593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11441641) 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, 78336 + ... + 78481.

It is an arithmetic number, because the mean of its divisors is an integer number (2901133).

Almost surely, 2^11447641 is an apocalyptic number.

It is an amenable number.

11447641 is a deficient number, since it is larger than the sum of its proper divisors (156891).

11447641 is an equidigital number, since it uses as much as digits as its factorization.

11447641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156890.

The product of its digits is 2688, while the sum is 28.

The square root of 11447641 is about 3383.4362710121. The cubic root of 11447641 is about 225.3747893471.

The spelling of 11447641 in words is "eleven million, four hundred forty-seven thousand, six hundred forty-one".