398084243 has 4 divisors (see below), whose sum is σ = 399670488. Its totient is φ = 396498000.

The previous prime is 398084233. The next prime is 398084249. The reversal of 398084243 is 342480893.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 398084243 - 2⁴ = 398084227 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 398084243.

It is not an unprimeable number, because it can be changed into a prime (398084249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 792746 + ... + 793247.

It is an arithmetic number, because the mean of its divisors is an integer number (99917622).

Almost surely, 2^398084243 is an apocalyptic number.

398084243 is a deficient number, since it is larger than the sum of its proper divisors (1586245).

398084243 is a wasteful number, since it uses less digits than its factorization.

398084243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1586244.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 398084243 is about 19952.0485915607. The cubic root of 398084243 is about 735.6281319635.

The spelling of 398084243 in words is "three hundred ninety-eight million, eighty-four thousand, two hundred forty-three".