405909068 has 24 divisors (see below), whose sum is σ = 752763312. Its totient is φ = 190854144.

The previous prime is 405909041. The next prime is 405909079. The reversal of 405909068 is 860909504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125771 + ... + 128957.

It is an arithmetic number, because the mean of its divisors is an integer number (31365138).

Almost surely, 2^405909068 is an apocalyptic number.

It is an amenable number.

405909068 is a deficient number, since it is larger than the sum of its proper divisors (346854244).

405909068 is a wasteful number, since it uses less digits than its factorization.

405909068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081 (or 5079 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 405909068 is about 20147.1851135587. The cubic root of 405909068 is about 740.4167776392.

The spelling of 405909068 in words is "four hundred five million, nine hundred nine thousand, sixty-eight".