405704406 has 32 divisors (see below), whose sum is σ = 848010240. Its totient is φ = 129153024.

The previous prime is 405704393. The next prime is 405704407. The reversal of 405704406 is 604407504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405704407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104211 + ... + 108033.

It is an arithmetic number, because the mean of its divisors is an integer number (26500320).

Almost surely, 2^405704406 is an apocalyptic number.

405704406 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

405704406 is an abundant number, since it is smaller than the sum of its proper divisors (442305834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405704406 is a wasteful number, since it uses less digits than its factorization.

405704406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4620.

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 405704406 is about 20142.1053020780. The cubic root of 405704406 is about 740.2923157289.

The spelling of 405704406 in words is "four hundred five million, seven hundred four thousand, four hundred six".