398219109 has 16 divisors (see below), whose sum is σ = 543136512. Its totient is φ = 259409088.

The previous prime is 398219089. The next prime is 398219111. The reversal of 398219109 is 901912893.

It is not a de Polignac number, because 398219109 - 2⁵ = 398219077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398219209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101427 + ... + 105279.

It is an arithmetic number, because the mean of its divisors is an integer number (33946032).

Almost surely, 2^398219109 is an apocalyptic number.

It is an amenable number.

398219109 is a deficient number, since it is larger than the sum of its proper divisors (144917403).

398219109 is a wasteful number, since it uses less digits than its factorization.

398219109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636.

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 398219109 is about 19955.4280585509. The cubic root of 398219109 is about 735.7111964770.

The spelling of 398219109 in words is "three hundred ninety-eight million, two hundred nineteen thousand, one hundred nine".