405005005 has 8 divisors (see below), whose sum is σ = 488310624. Its totient is φ = 322467600.

The previous prime is 405004967. The next prime is 405005023. The reversal of 405005005 is 500500504.

It is a happy number.

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

It is not a de Polignac number, because 405005005 - 2²³ = 396616397 is a prime.

It is a Duffinian number.

405005005 is a modest number, since divided by 5005 gives 405 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 190891 + ... + 193000.

It is an arithmetic number, because the mean of its divisors is an integer number (61038828).

Almost surely, 2^405005005 is an apocalyptic number.

It is an amenable number.

405005005 is a deficient number, since it is larger than the sum of its proper divisors (83305619).

405005005 is a wasteful number, since it uses less digits than its factorization.

405005005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384107.

The product of its (nonzero) digits is 500, while the sum is 19.

The square root of 405005005 is about 20124.7361473387. The cubic root of 405005005 is about 739.8666700376.

Adding to 405005005 its reverse (500500504), we get a palindrome (905505509).

The spelling of 405005005 in words is "four hundred five million, five thousand, five".