406189 has 4 divisors (see below), whose sum is σ = 464224. Its totient is φ = 348156.

The previous prime is 406183. The next prime is 406207. The reversal of 406189 is 981604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406189 - 2⁹ = 405677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406183) 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, 29007 + ... + 29020.

It is an arithmetic number, because the mean of its divisors is an integer number (116056).

2⁴⁰⁶¹⁸⁹ is an apocalyptic number.

It is an amenable number.

406189 is a deficient number, since it is larger than the sum of its proper divisors (58035).

406189 is an equidigital number, since it uses as much as digits as its factorization.

406189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58034.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 406189 is about 637.3295850657. The cubic root of 406189 is about 74.0586946065.

It can be divided in two parts, 406 and 189, that added together give a palindrome (595).

The spelling of 406189 in words is "four hundred six thousand, one hundred eighty-nine".