398970171285 has 64 divisors (see below), whose sum is σ = 772650772992. Its totient is φ = 171615338496.

The previous prime is 398970171263. The next prime is 398970171323. The reversal of 398970171285 is 582171079893.

It is not a de Polignac number, because 398970171285 - 2⁶ = 398970171221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7823229 + ... + 7874061.

It is an arithmetic number, because the mean of its divisors is an integer number (12072668328).

Almost surely, 2^398970171285 is an apocalyptic number.

398970171285 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

398970171285 is a deficient number, since it is larger than the sum of its proper divisors (373680601707).

398970171285 is a wasteful number, since it uses less digits than its factorization.

398970171285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55262.

The product of its (nonzero) digits is 7620480, while the sum is 60.

The spelling of 398970171285 in words is "three hundred ninety-eight billion, nine hundred seventy million, one hundred seventy-one thousand, two hundred eighty-five".