398184983 has 4 divisors (see below), whose sum is σ = 455068560. Its totient is φ = 341301408.

The previous prime is 398184973. The next prime is 398185027. The reversal of 398184983 is 389481893.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389481893 = 19 ⋅20499047.

It is not a de Polignac number, because 398184983 - 2¹⁴ = 398168599 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 (398184973) 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, 28441778 + ... + 28441791.

It is an arithmetic number, because the mean of its divisors is an integer number (113767140).

Almost surely, 2^398184983 is an apocalyptic number.

398184983 is a deficient number, since it is larger than the sum of its proper divisors (56883577).

398184983 is an equidigital number, since it uses as much as digits as its factorization.

398184983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56883576.

The product of its digits is 1492992, while the sum is 53.

The square root of 398184983 is about 19954.5729846569. The cubic root of 398184983 is about 735.6901799085.

The spelling of 398184983 in words is "three hundred ninety-eight million, one hundred eighty-four thousand, nine hundred eighty-three".