398285108671 has 4 divisors (see below), whose sum is σ = 401325453144. Its totient is φ = 395244764200.

The previous prime is 398285108657. The next prime is 398285108713. The reversal of 398285108671 is 176801582893.

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 398285108671 - 2¹⁷ = 398284977599 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 (398285106671) 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, 1520172040 + ... + 1520172301.

It is an arithmetic number, because the mean of its divisors is an integer number (100331363286).

Almost surely, 2^398285108671 is an apocalyptic number.

398285108671 is a deficient number, since it is larger than the sum of its proper divisors (3040344473).

398285108671 is a wasteful number, since it uses less digits than its factorization.

398285108671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3040344472.

The product of its (nonzero) digits is 5806080, while the sum is 58.

The spelling of 398285108671 in words is "three hundred ninety-eight billion, two hundred eighty-five million, one hundred eight thousand, six hundred seventy-one".