406047 has 4 divisors (see below), whose sum is σ = 541400. Its totient is φ = 270696.

The previous prime is 406037. The next prime is 406067. The reversal of 406047 is 740604.

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

It is not a de Polignac number, because 406047 - 2¹⁴ = 389663 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406027) 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, 67672 + ... + 67677.

It is an arithmetic number, because the mean of its divisors is an integer number (135350).

2⁴⁰⁶⁰⁴⁷ is an apocalyptic number.

406047 is a deficient number, since it is larger than the sum of its proper divisors (135353).

406047 is a wasteful number, since it uses less digits than its factorization.

406047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135352.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 406047 is about 637.2181729989. The cubic root of 406047 is about 74.0500635174.

The spelling of 406047 in words is "four hundred six thousand, forty-seven".