398105196 has 12 divisors (see below), whose sum is σ = 928912152. Its totient is φ = 132701728.

The previous prime is 398105179. The next prime is 398105219. The reversal of 398105196 is 691501893.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16587705 + ... + 16587728.

It is an arithmetic number, because the mean of its divisors is an integer number (77409346).

Almost surely, 2^398105196 is an apocalyptic number.

It is an amenable number.

398105196 is an abundant number, since it is smaller than the sum of its proper divisors (530806956).

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

398105196 is a wasteful number, since it uses less digits than its factorization.

398105196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33175440 (or 33175438 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 398105196 is about 19952.5736685772. The cubic root of 398105196 is about 735.6410382315.

The spelling of 398105196 in words is "three hundred ninety-eight million, one hundred five thousand, one hundred ninety-six".