406598405 has 4 divisors (see below), whose sum is σ = 487918092. Its totient is φ = 325278720.

The previous prime is 406598399. The next prime is 406598417. The reversal of 406598405 is 504895604.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 56085121 + 350513284 = 7489^2 + 18722^2 .

It is not a de Polignac number, because 406598405 - 2⁶ = 406598341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40659836 + ... + 40659845.

It is an arithmetic number, because the mean of its divisors is an integer number (121979523).

Almost surely, 2^406598405 is an apocalyptic number.

It is an amenable number.

406598405 is a deficient number, since it is larger than the sum of its proper divisors (81319687).

406598405 is an equidigital number, since it uses as much as digits as its factorization.

406598405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81319686.

The product of its (nonzero) digits is 172800, while the sum is 41.

The square root of 406598405 is about 20164.2853828248. The cubic root of 406598405 is about 740.8356793628.

The spelling of 406598405 in words is "four hundred six million, five hundred ninety-eight thousand, four hundred five".