406304999 has 4 divisors (see below), whose sum is σ = 408549960. Its totient is φ = 404060040.

The previous prime is 406304953. The next prime is 406305007. The reversal of 406304999 is 999403604.

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 406304999 - 2¹² = 406300903 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 (406304909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1122209 + ... + 1122570.

It is an arithmetic number, because the mean of its divisors is an integer number (102137490).

Almost surely, 2^406304999 is an apocalyptic number.

406304999 is a deficient number, since it is larger than the sum of its proper divisors (2244961).

406304999 is a wasteful number, since it uses less digits than its factorization.

406304999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2244960.

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 406304999 is about 20157.0086818456. The cubic root of 406304999 is about 740.6574380186.

The spelling of 406304999 in words is "four hundred six million, three hundred four thousand, nine hundred ninety-nine".