409194198 has 96 divisors (see below), whose sum is σ = 1042329600. Its totient is φ = 115965360.

The previous prime is 409194197. The next prime is 409194217. The reversal of 409194198 is 891491904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409194193) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1179061 + ... + 1179407.

It is an arithmetic number, because the mean of its divisors is an integer number (10857600).

Almost surely, 2^409194198 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 409194198, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521164800).

409194198 is an abundant number, since it is smaller than the sum of its proper divisors (633135402).

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

409194198 is a wasteful number, since it uses less digits than its factorization.

409194198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 550 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The square root of 409194198 is about 20228.5490829174. The cubic root of 409194198 is about 742.4088763457.

It can be divided in two parts, 4091 and 94198, that added together give a palindrome (98289).

The spelling of 409194198 in words is "four hundred nine million, one hundred ninety-four thousand, one hundred ninety-eight".