8840047 has 4 divisors (see below), whose sum is σ = 8972056. Its totient is φ = 8708040.

The previous prime is 8839967. The next prime is 8840057. The reversal of 8840047 is 7400488.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8840047 - 2¹¹ = 8837999 is a prime.

It is a Duffinian number.

8840047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8840057) 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, 65904 + ... + 66037.

It is an arithmetic number, because the mean of its divisors is an integer number (2243014).

Almost surely, 2^8840047 is an apocalyptic number.

8840047 is a deficient number, since it is larger than the sum of its proper divisors (132009).

8840047 is a wasteful number, since it uses less digits than its factorization.

8840047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132008.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 8840047 is about 2973.2216533585. The cubic root of 8840047 is about 206.7687289269.

The spelling of 8840047 in words is "eight million, eight hundred forty thousand, forty-seven".