398673671 has 8 divisors (see below), whose sum is σ = 448946688. Its totient is φ = 350739000.

The previous prime is 398673661. The next prime is 398673719. The reversal of 398673671 is 176376893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398673671 - 2¹⁰ = 398672647 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 (398673601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584225 + ... + 584906.

It is an arithmetic number, because the mean of its divisors is an integer number (56118336).

Almost surely, 2^398673671 is an apocalyptic number.

398673671 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

398673671 is a deficient number, since it is larger than the sum of its proper divisors (50273017).

398673671 is a wasteful number, since it uses less digits than its factorization.

398673671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169173.

The product of its digits is 1143072, while the sum is 50.

The square root of 398673671 is about 19966.8142426377. The cubic root of 398673671 is about 735.9910249920.

The spelling of 398673671 in words is "three hundred ninety-eight million, six hundred seventy-three thousand, six hundred seventy-one".