406599 has 4 divisors (see below), whose sum is σ = 542136. Its totient is φ = 271064.

The previous prime is 406591. The next prime is 406631. The reversal of 406599 is 995604.

It is a happy number.

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 406599 - 2³ = 406591 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406591) 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, 67764 + ... + 67769.

It is an arithmetic number, because the mean of its divisors is an integer number (135534).

2⁴⁰⁶⁵⁹⁹ is an apocalyptic number.

406599 is a deficient number, since it is larger than the sum of its proper divisors (135537).

406599 is a wasteful number, since it uses less digits than its factorization.

406599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135536.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 406599 is about 637.6511585499. The cubic root of 406599 is about 74.0836040732.

The spelling of 406599 in words is "four hundred six thousand, five hundred ninety-nine".