398238144 has 56 divisors (see below), whose sum is σ = 1076114688. Its totient is φ = 129918720.

The previous prime is 398238143. The next prime is 398238173. The reversal of 398238144 is 441832893.

It is a junction number, because it is equal to n+sod(n) for n = 398238096 and 398238105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398238143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13042 + ... + 31089.

Almost surely, 2^398238144 is an apocalyptic number.

It is an amenable number.

398238144 is an abundant number, since it is smaller than the sum of its proper divisors (677876544).

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

398238144 is a wasteful number, since it uses less digits than its factorization.

398238144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44193 (or 44183 counting only the distinct ones).

The product of its digits is 165888, while the sum is 42.

The square root of 398238144 is about 19955.9049907540. The cubic root of 398238144 is about 735.7229186999.

The spelling of 398238144 in words is "three hundred ninety-eight million, two hundred thirty-eight thousand, one hundred forty-four".