398545893 has 16 divisors (see below), whose sum is σ = 590889600. Its totient is φ = 265494240.

The previous prime is 398545867. The next prime is 398545963.

398545893 is a `hidden beast` number, since 3 + 9 + 8 + 54 + 589 + 3 = 666.

398545893 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 398545893 - 2¹³ = 398537701 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398545813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35913 + ... + 45681.

It is an arithmetic number, because the mean of its divisors is an integer number (36930600).

Almost surely, 2^398545893 is an apocalyptic number.

It is an amenable number.

398545893 is a deficient number, since it is larger than the sum of its proper divisors (192343707).

398545893 is a wasteful number, since it uses less digits than its factorization.

398545893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11289 (or 11283 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The square root of 398545893 is about 19963.6142268879. The cubic root of 398545893 is about 735.9123863149.

The spelling of 398545893 in words is "three hundred ninety-eight million, five hundred forty-five thousand, eight hundred ninety-three".