398228164 has 12 divisors (see below), whose sum is σ = 727199424. Its totient is φ = 190456904.

The previous prime is 398228147. The next prime is 398228183. The reversal of 398228164 is 461822893.

It is a self number, because there is not a number n which added to its sum of digits gives 398228164.

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, 2164192 + ... + 2164375.

It is an arithmetic number, because the mean of its divisors is an integer number (60599952).

Almost surely, 2^398228164 is an apocalyptic number.

It is an amenable number.

398228164 is a deficient number, since it is larger than the sum of its proper divisors (328971260).

398228164 is a wasteful number, since it uses less digits than its factorization.

398228164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4328594 (or 4328592 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 398228164 is about 19955.6549378867. The cubic root of 398228164 is about 735.7167728161.

The spelling of 398228164 in words is "three hundred ninety-eight million, two hundred twenty-eight thousand, one hundred sixty-four".