398227389 has 16 divisors (see below), whose sum is σ = 613081728. Its totient is φ = 225211392.

The previous prime is 398227373. The next prime is 398227393. The reversal of 398227389 is 983722893.

It is a happy number.

It is not a de Polignac number, because 398227389 - 2⁴ = 398227373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398227369) 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, 95712 + ... + 99785.

It is an arithmetic number, because the mean of its divisors is an integer number (38317608).

Almost surely, 2^398227389 is an apocalyptic number.

It is an amenable number.

398227389 is a deficient number, since it is larger than the sum of its proper divisors (214854339).

398227389 is a wasteful number, since it uses less digits than its factorization.

398227389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195604.

The product of its digits is 1306368, while the sum is 51.

The square root of 398227389 is about 19955.6355198225. The cubic root of 398227389 is about 735.7162955513.

The spelling of 398227389 in words is "three hundred ninety-eight million, two hundred twenty-seven thousand, three hundred eighty-nine".