4000847 has 4 divisors (see below), whose sum is σ = 4109016. Its totient is φ = 3892680.

The previous prime is 4000823. The next prime is 4000853. The reversal of 4000847 is 7480004.

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 4000847 - 2¹⁶ = 3935311 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 (4000897) 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, 54029 + ... + 54102.

It is an arithmetic number, because the mean of its divisors is an integer number (1027254).

Almost surely, 2^4000847 is an apocalyptic number.

4000847 is a deficient number, since it is larger than the sum of its proper divisors (108169).

4000847 is a wasteful number, since it uses less digits than its factorization.

4000847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108168.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 4000847 is about 2000.2117387917. The cubic root of 4000847 is about 158.7513088118.

The spelling of 4000847 in words is "four million, eight hundred forty-seven", and thus it is an aban number.