405423198 has 16 divisors (see below), whose sum is σ = 900940560. Its totient is φ = 135141048.

The previous prime is 405423169. The next prime is 405423209. The reversal of 405423198 is 891324504.

405423198 is a `hidden beast` number, since 40 + 5 + 423 + 198 = 666.

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, 3753865 + ... + 3753972.

It is an arithmetic number, because the mean of its divisors is an integer number (56308785).

Almost surely, 2^405423198 is an apocalyptic number.

405423198 is an abundant number, since it is smaller than the sum of its proper divisors (495517362).

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

405423198 is a wasteful number, since it uses less digits than its factorization.

405423198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7507848 (or 7507842 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 405423198 is about 20135.1234910541. The cubic root of 405423198 is about 740.1212353108.

The spelling of 405423198 in words is "four hundred five million, four hundred twenty-three thousand, one hundred ninety-eight".