400106 has 8 divisors (see below), whose sum is σ = 685920. Its totient is φ = 171468.

The previous prime is 400093. The next prime is 400109. The reversal of 400106 is 601004.

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

It is a super-2 number, since 2×400106² = 320169622472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400109) by changing a digit.

400106 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14276 + ... + 14303.

It is an arithmetic number, because the mean of its divisors is an integer number (85740).

2⁴⁰⁰¹⁰⁶ is an apocalyptic number.

400106 is a deficient number, since it is larger than the sum of its proper divisors (285814).

400106 is a wasteful number, since it uses less digits than its factorization.

400106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28588.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 400106 is about 632.5393268406. The cubic root of 400106 is about 73.6871378536.

The spelling of 400106 in words is "four hundred thousand, one hundred six".