398203559 has 4 divisors (see below), whose sum is σ = 428834616. Its totient is φ = 367572504.

The previous prime is 398203549. The next prime is 398203573. The reversal of 398203559 is 955302893.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 398203559 - 2²⁰ = 397154983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398203549) by changing a digit.

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, 15315509 + ... + 15315534.

It is an arithmetic number, because the mean of its divisors is an integer number (107208654).

Almost surely, 2^398203559 is an apocalyptic number.

398203559 is a deficient number, since it is larger than the sum of its proper divisors (30631057).

398203559 is a wasteful number, since it uses less digits than its factorization.

398203559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30631056.

The product of its (nonzero) digits is 291600, while the sum is 44.

The square root of 398203559 is about 19955.0384364451. The cubic root of 398203559 is about 735.7016201259.

The spelling of 398203559 in words is "three hundred ninety-eight million, two hundred three thousand, five hundred fifty-nine".