406115 has 4 divisors (see below), whose sum is σ = 487344. Its totient is φ = 324888.

The previous prime is 406093. The next prime is 406117. The reversal of 406115 is 511604.

It is a happy number.

406115 is nontrivially palindromic in base 2.

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 406115 - 2¹⁰ = 405091 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406093 and 406102.

It is not an unprimeable number, because it can be changed into a prime (406117) 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, 40607 + ... + 40616.

It is an arithmetic number, because the mean of its divisors is an integer number (121836).

2⁴⁰⁶¹¹⁵ is an apocalyptic number.

406115 is a deficient number, since it is larger than the sum of its proper divisors (81229).

406115 is an equidigital number, since it uses as much as digits as its factorization.

406115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81228.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 406115 is about 637.2715276866. The cubic root of 406115 is about 74.0541969660.

Adding to 406115 its reverse (511604), we get a palindrome (917719).

The spelling of 406115 in words is "four hundred six thousand, one hundred fifteen".