11447861 has 8 divisors (see below), whose sum is σ = 12105600. Its totient is φ = 10795680.

The previous prime is 11447801. The next prime is 11447869. The reversal of 11447861 is 16874411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11447861 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 (11447869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3281 + ... + 5801.

It is an arithmetic number, because the mean of its divisors is an integer number (1513200).

Almost surely, 2^11447861 is an apocalyptic number.

It is an amenable number.

11447861 is a deficient number, since it is larger than the sum of its proper divisors (657739).

11447861 is a wasteful number, since it uses less digits than its factorization.

11447861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2779.

The product of its digits is 5376, while the sum is 32.

The square root of 11447861 is about 3383.4687821820. The cubic root of 11447861 is about 225.3762330837.

The spelling of 11447861 in words is "eleven million, four hundred forty-seven thousand, eight hundred sixty-one".