406045 has 12 divisors (see below), whose sum is σ = 519444. Its totient is φ = 304640.

The previous prime is 406037. The next prime is 406067. The reversal of 406045 is 540604.

It can be written as a sum of positive squares in 6 ways, for example, as 38809 + 367236 = 197^2 + 606^2 .

It is not a de Polignac number, because 406045 - 2³ = 406037 is a prime.

It is a Duffinian number.

406045 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1305 + ... + 1585.

It is an arithmetic number, because the mean of its divisors is an integer number (43287).

2⁴⁰⁶⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

406045 is a deficient number, since it is larger than the sum of its proper divisors (113399).

406045 is a wasteful number, since it uses less digits than its factorization.

406045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320 (or 303 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 406045 is about 637.2166036757. The cubic root of 406045 is about 74.0499419384.

Adding to 406045 its reverse (540604), we get a palindrome (946649).

The spelling of 406045 in words is "four hundred six thousand, forty-five".