405344003 has 8 divisors (see below), whose sum is σ = 423123840. Its totient is φ = 387858240.

The previous prime is 405343993. The next prime is 405344011. The reversal of 405344003 is 300443504.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 405344003 - 2⁴ = 405343987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405344003.

It is not an unprimeable number, because it can be changed into a prime (405344083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70700 + ... + 76217.

It is an arithmetic number, because the mean of its divisors is an integer number (52890480).

Almost surely, 2^405344003 is an apocalyptic number.

405344003 is a deficient number, since it is larger than the sum of its proper divisors (17779837).

405344003 is a wasteful number, since it uses less digits than its factorization.

405344003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147037.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 405344003 is about 20133.1568066213. The cubic root of 405344003 is about 740.0730406355.

Adding to 405344003 its reverse (300443504), we get a palindrome (705787507).

The spelling of 405344003 in words is "four hundred five million, three hundred forty-four thousand, three".