406090 has 8 divisors (see below), whose sum is σ = 730980. Its totient is φ = 162432.

The previous prime is 406073. The next prime is 406093. The reversal of 406090 is 90604.

It is a happy number.

406090 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 385641 + 20449 = 621^2 + 143^2 .

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

It is not an unprimeable number, because it can be changed into a prime (406093) 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, 20295 + ... + 20314.

2⁴⁰⁶⁰⁹⁰ is an apocalyptic number.

406090 is a deficient number, since it is larger than the sum of its proper divisors (324890).

406090 is a wasteful number, since it uses less digits than its factorization.

406090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40616.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 406090 is about 637.2519125118. The cubic root of 406090 is about 74.0526773694.

Adding to 406090 its reverse (90604), we get a palindrome (496694).

The spelling of 406090 in words is "four hundred six thousand, ninety".