405400105 has 32 divisors (see below), whose sum is σ = 564288768. Its totient is φ = 276326400.

The previous prime is 405400063. The next prime is 405400109. The reversal of 405400105 is 501004504.

It is not a de Polignac number, because 405400105 - 2⁹ = 405399593 is a prime.

It is a super-2 number, since 2×405400105² = 328698490268022050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405400109) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 261964 + ... + 263506.

It is an arithmetic number, because the mean of its divisors is an integer number (17634024).

Almost surely, 2^405400105 is an apocalyptic number.

It is an amenable number.

405400105 is a deficient number, since it is larger than the sum of its proper divisors (158888663).

405400105 is a wasteful number, since it uses less digits than its factorization.

405400105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 405400105 is about 20134.5500322207. The cubic root of 405400105 is about 740.1071825512.

Adding to 405400105 its reverse (501004504), we get a palindrome (906404609).

The spelling of 405400105 in words is "four hundred five million, four hundred thousand, one hundred five".