398858841 has 12 divisors (see below), whose sum is σ = 589528368. Its totient is φ = 259721784.

The previous prime is 398858833. The next prime is 398858851. The reversal of 398858841 is 148858893.

It is not a de Polignac number, because 398858841 - 2³ = 398858833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (398858851) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 514935 + ... + 515708.

It is an arithmetic number, because the mean of its divisors is an integer number (49127364).

Almost surely, 2^398858841 is an apocalyptic number.

It is an amenable number.

398858841 is a deficient number, since it is larger than the sum of its proper divisors (190669527).

398858841 is a wasteful number, since it uses less digits than its factorization.

398858841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030692 (or 1030689 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 54.

The square root of 398858841 is about 19971.4506483630. The cubic root of 398858841 is about 736.1049547327.

The spelling of 398858841 in words is "three hundred ninety-eight million, eight hundred fifty-eight thousand, eight hundred forty-one".