405855198 has 48 divisors (see below), whose sum is σ = 1042204800. Its totient is φ = 115957656.

The previous prime is 405855179. The next prime is 405855209. The reversal of 405855198 is 891558504.

It is a happy number.

405855198 is a `hidden beast` number, since 4 + 0 + 5 + 8 + 551 + 98 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 56248 + ... + 63051.

It is an arithmetic number, because the mean of its divisors is an integer number (21712600).

Almost surely, 2^405855198 is an apocalyptic number.

405855198 is an abundant number, since it is smaller than the sum of its proper divisors (636349602).

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

405855198 is a wasteful number, since it uses less digits than its factorization.

405855198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119323 (or 119311 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 405855198 is about 20145.8481578711. The cubic root of 405855198 is about 740.3840215208.

The spelling of 405855198 in words is "four hundred five million, eight hundred fifty-five thousand, one hundred ninety-eight".