423806 has 8 divisors (see below), whose sum is σ = 657720. Its totient is φ = 204568.

The previous prime is 423803. The next prime is 423823. The reversal of 423806 is 608324.

423806 = 324² + 325² + ... + 327².

It is a happy number.

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

It is a super-2 number, since 2×423806² = 359223051272, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423803) 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, 3596 + ... + 3711.

It is an arithmetic number, because the mean of its divisors is an integer number (82215).

2⁴²³⁸⁰⁶ is an apocalyptic number.

423806 is a deficient number, since it is larger than the sum of its proper divisors (233914).

423806 is a wasteful number, since it uses less digits than its factorization.

423806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7338.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 423806 is about 651.0038402344. The cubic root of 423806 is about 75.1142554837.

The spelling of 423806 in words is "four hundred twenty-three thousand, eight hundred six".