406847 has 18 divisors (see below), whose sum is σ = 521208. Its totient is φ = 316008.

The previous prime is 406837. The next prime is 406859. The reversal of 406847 is 748604.

It is not a de Polignac number, because 406847 - 2⁸ = 406591 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406807) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17678 + ... + 17700.

It is an arithmetic number, because the mean of its divisors is an integer number (28956).

2⁴⁰⁶⁸⁴⁷ is an apocalyptic number.

406847 is a deficient number, since it is larger than the sum of its proper divisors (114361).

406847 is a wasteful number, since it uses less digits than its factorization.

406847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 406847 is about 637.8455926006. The cubic root of 406847 is about 74.0986631361.

The spelling of 406847 in words is "four hundred six thousand, eight hundred forty-seven".