450117198 has 12 divisors (see below), whose sum is σ = 975253968. Its totient is φ = 150039060.

The previous prime is 450117193. The next prime is 450117257. The reversal of 450117198 is 891711054.

450117198 is a `hidden beast` number, since 450 + 1 + 17 + 198 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (450117193) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12503238 + ... + 12503273.

It is an arithmetic number, because the mean of its divisors is an integer number (81271164).

Almost surely, 2^450117198 is an apocalyptic number.

450117198 is an abundant number, since it is smaller than the sum of its proper divisors (525136770).

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

450117198 is a wasteful number, since it uses less digits than its factorization.

450117198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25006519 (or 25006516 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 36.

The square root of 450117198 is about 21215.9656391124. The cubic root of 450117198 is about 766.3759524952.

The spelling of 450117198 in words is "four hundred fifty million, one hundred seventeen thousand, one hundred ninety-eight".